chore: Update discovery artifacts (#1562)

## Deleted keys were detected in the following stable discovery artifacts:
androidpublisher v3 https://github.com/googleapis/google-api-python-client/commit/594b20bfc7b724ab1b19b3a8f1df9783f82b25c7
appengine v1 https://github.com/googleapis/google-api-python-client/commit/59606ed1d543608549a574ac1229d20c970399de
retail v2 https://github.com/googleapis/google-api-python-client/commit/8d4f2af1eb762bb626f94bde61614e482477c83a

## Deleted keys were detected in the following pre-stable discovery artifacts:
appengine v1alpha https://github.com/googleapis/google-api-python-client/commit/59606ed1d543608549a574ac1229d20c970399de
appengine v1beta https://github.com/googleapis/google-api-python-client/commit/59606ed1d543608549a574ac1229d20c970399de
dns v1beta2 https://github.com/googleapis/google-api-python-client/commit/3e8173dcdf327abec4f7927cad565a4fdca7382d
retail v2alpha https://github.com/googleapis/google-api-python-client/commit/8d4f2af1eb762bb626f94bde61614e482477c83a
retail v2beta https://github.com/googleapis/google-api-python-client/commit/8d4f2af1eb762bb626f94bde61614e482477c83a

## Discovery Artifact Change Summary:
feat(analyticsadmin): update the api https://github.com/googleapis/google-api-python-client/commit/be347fe46fbee592c9a97d405655ef9a121b1d15
feat(androidpublisher): update the api https://github.com/googleapis/google-api-python-client/commit/594b20bfc7b724ab1b19b3a8f1df9783f82b25c7
feat(appengine): update the api https://github.com/googleapis/google-api-python-client/commit/59606ed1d543608549a574ac1229d20c970399de
feat(area120tables): update the api https://github.com/googleapis/google-api-python-client/commit/f35db63f3e1146ee870334abfd317f168f098600
feat(chromepolicy): update the api https://github.com/googleapis/google-api-python-client/commit/ecaafc4d06c170ac5e1cab7127884a4ea0f17a4c
feat(cloudbuild): update the api https://github.com/googleapis/google-api-python-client/commit/7f6e2e7afba57f065155dc329fd6b7fc1c57c897
feat(cloudsearch): update the api https://github.com/googleapis/google-api-python-client/commit/b6310c5ea4221a69c71558b8911f817a99987b18
feat(container): update the api https://github.com/googleapis/google-api-python-client/commit/01aebc9962e09b7605975e2eee967ac9362bca24
feat(content): update the api https://github.com/googleapis/google-api-python-client/commit/47a79355df5a7e4a87cbaec761c3246abb121fe0
feat(dialogflow): update the api https://github.com/googleapis/google-api-python-client/commit/14e2dce00734d9b58456787bf14752e4b83d2381
feat(dns): update the api https://github.com/googleapis/google-api-python-client/commit/3e8173dcdf327abec4f7927cad565a4fdca7382d
feat(documentai): update the api https://github.com/googleapis/google-api-python-client/commit/fa101412c120778403c48795988e884a9d70f5ea
feat(domains): update the api https://github.com/googleapis/google-api-python-client/commit/9217f6280301716c31544762964c61dbae6deb9d
feat(iap): update the api https://github.com/googleapis/google-api-python-client/commit/178edbddc9ff2b40086d3e1dc1d30757986bca80
feat(managedidentities): update the api https://github.com/googleapis/google-api-python-client/commit/6c7bd384ce9e2e8504a5d97119fbd5bc1527f879
feat(osconfig): update the api https://github.com/googleapis/google-api-python-client/commit/89f87e5122b240ae364ece7ff5a70aa4da3c5d76
feat(redis): update the api https://github.com/googleapis/google-api-python-client/commit/5e0bac188a099153b52d63500667efc3790d8f9a
feat(retail): update the api https://github.com/googleapis/google-api-python-client/commit/8d4f2af1eb762bb626f94bde61614e482477c83a
feat(servicenetworking): update the api https://github.com/googleapis/google-api-python-client/commit/b74f86c26805582014e9c462a8a6a02321612a62
feat(speech): update the api https://github.com/googleapis/google-api-python-client/commit/1fe9ba81f62cf517597e12c86a6c0ba7613da7c2
feat(sqladmin): update the api https://github.com/googleapis/google-api-python-client/commit/1e3c477f32ceee89c347f322d2e5e54eb9cbebef
diff --git a/docs/dyn/container_v1.projects.zones.clusters.html b/docs/dyn/container_v1.projects.zones.clusters.html
index 00bbe85..67d17bc 100644
--- a/docs/dyn/container_v1.projects.zones.clusters.html
+++ b/docs/dyn/container_v1.projects.zones.clusters.html
@@ -525,6 +525,8 @@
       ],
       "enabled": True or False, # Whether or not master authorized networks is enabled.
     },
+    "meshCertificates": { # Configuration for issuance of mTLS keys and certificates to Kubernetes pods. # Configuration for issuance of mTLS keys and certificates to Kubernetes pods.
+    },
     "monitoringConfig": { # MonitoringConfig is cluster monitoring configuration. # Monitoring configuration for the cluster.
       "componentConfig": { # MonitoringComponentConfig is cluster monitoring component configuration. # Monitoring components configuration
         "enableComponents": [ # Select components to collect metrics. An empty set would disable all monitoring.
@@ -1126,6 +1128,8 @@
     ],
     "enabled": True or False, # Whether or not master authorized networks is enabled.
   },
+  "meshCertificates": { # Configuration for issuance of mTLS keys and certificates to Kubernetes pods. # Configuration for issuance of mTLS keys and certificates to Kubernetes pods.
+  },
   "monitoringConfig": { # MonitoringConfig is cluster monitoring configuration. # Monitoring configuration for the cluster.
     "componentConfig": { # MonitoringComponentConfig is cluster monitoring component configuration. # Monitoring components configuration
       "enableComponents": [ # Select components to collect metrics. An empty set would disable all monitoring.
@@ -1674,6 +1678,8 @@
         ],
         "enabled": True or False, # Whether or not master authorized networks is enabled.
       },
+      "meshCertificates": { # Configuration for issuance of mTLS keys and certificates to Kubernetes pods. # Configuration for issuance of mTLS keys and certificates to Kubernetes pods.
+      },
       "monitoringConfig": { # MonitoringConfig is cluster monitoring configuration. # Monitoring configuration for the cluster.
         "componentConfig": { # MonitoringComponentConfig is cluster monitoring component configuration. # Monitoring components configuration
           "enableComponents": [ # Select components to collect metrics. An empty set would disable all monitoring.
@@ -2834,6 +2840,8 @@
       "enabled": True or False, # Whether or not master authorized networks is enabled.
     },
     "desiredMasterVersion": "A String", # The Kubernetes version to change the master to. Users may specify either explicit versions offered by Kubernetes Engine or version aliases, which have the following behavior: - "latest": picks the highest valid Kubernetes version - "1.X": picks the highest valid patch+gke.N patch in the 1.X version - "1.X.Y": picks the highest valid gke.N patch in the 1.X.Y version - "1.X.Y-gke.N": picks an explicit Kubernetes version - "-": picks the default Kubernetes version
+    "desiredMeshCertificates": { # Configuration for issuance of mTLS keys and certificates to Kubernetes pods. # Configuration for issuance of mTLS keys and certificates to Kubernetes pods.
+    },
     "desiredMonitoringConfig": { # MonitoringConfig is cluster monitoring configuration. # The desired monitoring configuration.
       "componentConfig": { # MonitoringComponentConfig is cluster monitoring component configuration. # Monitoring components configuration
         "enableComponents": [ # Select components to collect metrics. An empty set would disable all monitoring.