chore: Update discovery artifacts (#1328)

## Deleted keys were detected in the following stable discovery artifacts:
admindirectoryv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/1feda6f78f168e28d7842f49ad91fb00dc24ec19)
bigqueryreservationv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/7e6c78d448e472caaa67971160fdd44ccce061b0)
computev1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
doubleclickbidmanagerv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/d20e7e2553a1ea5d3690afba366683d4eb0ca647)
doubleclickbidmanagerv11[ [More details]](https://github.com/googleapis/google-api-python-client/commit/d20e7e2553a1ea5d3690afba366683d4eb0ca647)
serviceconsumermanagementv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/864ef4795a0e89263859f493f9c40d1a85e90c28)
serviceusagev1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/ecd65a89c54132856b47747439faf901dbfbafcb)

## Deleted keys were detected in the following pre-stable discovery artifacts:
bigqueryreservationv1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/7e6c78d448e472caaa67971160fdd44ccce061b0)
computealpha[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
computebeta[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
serviceconsumermanagementv1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/864ef4795a0e89263859f493f9c40d1a85e90c28)
serviceusagev1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/ecd65a89c54132856b47747439faf901dbfbafcb)

## Discovery Artifact Change Summary:
admindirectoryv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/1feda6f78f168e28d7842f49ad91fb00dc24ec19)
bigqueryreservationv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/7e6c78d448e472caaa67971160fdd44ccce061b0)
bigqueryreservationv1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/7e6c78d448e472caaa67971160fdd44ccce061b0)
computealpha[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
computebeta[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
computev1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
containerv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/9bc4a12e7ab57a1b5a5d3637087b80b3008e3352)
containerv1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/9bc4a12e7ab57a1b5a5d3637087b80b3008e3352)
doubleclickbidmanagerv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/d20e7e2553a1ea5d3690afba366683d4eb0ca647)
doubleclickbidmanagerv11[ [More details]](https://github.com/googleapis/google-api-python-client/commit/d20e7e2553a1ea5d3690afba366683d4eb0ca647)
serviceconsumermanagementv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/864ef4795a0e89263859f493f9c40d1a85e90c28)
serviceconsumermanagementv1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/864ef4795a0e89263859f493f9c40d1a85e90c28)
serviceusagev1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/ecd65a89c54132856b47747439faf901dbfbafcb)
serviceusagev1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/ecd65a89c54132856b47747439faf901dbfbafcb)
diff --git a/docs/dyn/compute_alpha.regionInstances.html b/docs/dyn/compute_alpha.regionInstances.html
index dc4ff1f..1281bd7 100644
--- a/docs/dyn/compute_alpha.regionInstances.html
+++ b/docs/dyn/compute_alpha.regionInstances.html
@@ -454,10 +454,8 @@
       "availabilityDomain": 42, # Specifies the availability domain (AD), which this instance should be scheduled on. The AD belongs to the spread GroupPlacementPolicy resource policy that has been assigned to the instance. Specify a value between 1-max count of availability domains in your GroupPlacementPolicy. See go/placement-policy-extension for more details.
       "latencyTolerant": True or False, # Defines whether the instance is tolerant of higher cpu latency. This can only be set during instance creation, or when the instance is not currently running. It must not be set if the preemptible option is also set.
       "locationHint": "A String", # An opaque location hint used to place the instance close to other resources. This field is for use by internal tools that use the public API.
-      "maintenanceFreezeDurationHours": 42, # Specifies the number of hours after instance creation where the instance won't be scheduled for maintenance.
-      "maintenanceInterval": "A String", # Specifies whether this VM may be a stable fleet VM. Setting this to "Periodic" designates this VM as a Stable Fleet VM.
-          #
-          # See go/stable-fleet-ug for more details.
+      "maintenanceFreezeDurationHours": 42, # Specifies the number of hours after VM instance creation where the VM won't be scheduled for maintenance.
+      "maintenanceInterval": "A String", # For more information about maintenance intervals, see Setting maintenance intervals.
       "minNodeCpus": 42, # The minimum number of virtual CPUs this instance will consume when running on a sole-tenant node.
       "nodeAffinities": [ # A set of node affinity and anti-affinity configurations. Refer to Configuring node affinity for more information. Overrides reservationAffinity.
         { # Node Affinity: the configuration of desired nodes onto which this Instance could be scheduled.
@@ -471,9 +469,6 @@
       "onHostMaintenance": "A String", # Defines the maintenance behavior for this instance. For standard instances, the default behavior is MIGRATE. For preemptible instances, the default and only possible behavior is TERMINATE. For more information, see Setting Instance Scheduling Options.
       "preemptible": True or False, # Defines whether the instance is preemptible. This can only be set during instance creation or while the instance is stopped and therefore, in a `TERMINATED` state. See Instance Life Cycle for more information on the possible instance states.
     },
-    "secureLabels": [ # Secure labels to apply to this instance. These can be later modified by the update method. Maximum number of secure labels allowed is 300.
-      "A String",
-    ],
     "secureTags": [ # Secure tags to apply to this instance. These can be later modified by the update method. Maximum number of secure tags allowed is 300.
       "A String",
     ],
@@ -845,10 +840,8 @@
       "availabilityDomain": 42, # Specifies the availability domain (AD), which this instance should be scheduled on. The AD belongs to the spread GroupPlacementPolicy resource policy that has been assigned to the instance. Specify a value between 1-max count of availability domains in your GroupPlacementPolicy. See go/placement-policy-extension for more details.
       "latencyTolerant": True or False, # Defines whether the instance is tolerant of higher cpu latency. This can only be set during instance creation, or when the instance is not currently running. It must not be set if the preemptible option is also set.
       "locationHint": "A String", # An opaque location hint used to place the instance close to other resources. This field is for use by internal tools that use the public API.
-      "maintenanceFreezeDurationHours": 42, # Specifies the number of hours after instance creation where the instance won't be scheduled for maintenance.
-      "maintenanceInterval": "A String", # Specifies whether this VM may be a stable fleet VM. Setting this to "Periodic" designates this VM as a Stable Fleet VM.
-          #
-          # See go/stable-fleet-ug for more details.
+      "maintenanceFreezeDurationHours": 42, # Specifies the number of hours after VM instance creation where the VM won't be scheduled for maintenance.
+      "maintenanceInterval": "A String", # For more information about maintenance intervals, see Setting maintenance intervals.
       "minNodeCpus": 42, # The minimum number of virtual CPUs this instance will consume when running on a sole-tenant node.
       "nodeAffinities": [ # A set of node affinity and anti-affinity configurations. Refer to Configuring node affinity for more information. Overrides reservationAffinity.
         { # Node Affinity: the configuration of desired nodes onto which this Instance could be scheduled.
@@ -906,6 +899,9 @@
   "predefinedNames": [ # DEPRECATED: Please use per_instance_properties instead.
     "A String",
   ],
+  "secureTags": [ # Secure tags to apply to this instance. These can be later modified by the update method. Maximum number of secure tags allowed is 300.
+    "A String",
+  ],
   "sourceInstanceTemplate": "A String", # Specifies the instance template from which to create instances. You may combine sourceInstanceTemplate with instanceProperties to override specific values from an existing instance template. Bulk API follows the semantics of JSON Merge Patch described by RFC 7396.
       # 
       # It can be a full or partial URL. For example, the following are all valid URLs to an instance template: