chore: Update discovery artifacts (#1416)

## Discovery Artifact Change Summary:
feat(bigqueryreservation): update the api https://github.com/googleapis/google-api-python-client/commit/63c00f6819408b943c2a7cc4bd2185828be173c6
feat(firebaserules): update the api https://github.com/googleapis/google-api-python-client/commit/7b2000437a01ecd25e4ba571049f62c5b6dc9d63
feat(iap): update the api https://github.com/googleapis/google-api-python-client/commit/18550fd0501057584ef6d2fa329f09b75dad97d8
feat(managedidentities): update the api https://github.com/googleapis/google-api-python-client/commit/d2220014e787c2a2c90808cfd1e49a25cd783e72
diff --git a/docs/dyn/people_v1.otherContacts.html b/docs/dyn/people_v1.otherContacts.html
index 0f534bc..dd604c8 100644
--- a/docs/dyn/people_v1.otherContacts.html
+++ b/docs/dyn/people_v1.otherContacts.html
@@ -551,7 +551,7 @@
     },
   ],
   "metadata": { # The metadata about a person. # Output only. Metadata about the person.
-    "deleted": True or False, # Output only. True if the person resource has been deleted. Populated only for [`connections.list`](/people/api/rest/v1/people.connections/list) requests that include a sync token.
+    "deleted": True or False, # Output only. True if the person resource has been deleted. Populated only for [`connections.list`](/people/api/rest/v1/people.connections/list) and [`otherContacts.list`](/people/api/rest/v1/otherContacts/list) requests that include a sync token.
     "linkedPeopleResourceNames": [ # Output only. Resource names of people linked to this resource.
       "A String",
     ],
@@ -973,7 +973,7 @@
   pageToken: string, Optional. A page token, received from a previous `ListOtherContacts` call. Provide this to retrieve the subsequent page. When paginating, all other parameters provided to `ListOtherContacts` must match the call that provided the page token.
   readMask: string, Required. A field mask to restrict which fields on each person are returned. Multiple fields can be specified by separating them with commas. Valid values are: * emailAddresses * names * phoneNumbers
   requestSyncToken: boolean, Optional. Whether the response should include `next_sync_token`, which can be used to get all changes since the last request. For subsequent sync requests use the `sync_token` param instead. Initial sync requests that specify `request_sync_token` have an additional rate limit.
-  syncToken: string, Optional. A sync token, received from a previous `ListOtherContacts` call. Provide this to retrieve only the resources changed since the last request. Sync requests that specify `sync_token` have an additional rate limit. When syncing, all other parameters provided to `ListOtherContacts` must match the call that provided the sync token.
+  syncToken: string, Optional. A sync token, received from a previous `ListOtherContacts` call. Provide this to retrieve only the resources changed since the last request. Sync requests that specify `sync_token` have an additional rate limit. When the `syncToken` is specified, resources deleted since the last sync will be returned as a person with [`PersonMetadata.deleted`](/people/api/rest/v1/people#Person.PersonMetadata.FIELDS.deleted) set to true. When the `syncToken` is specified, all other parameters provided to `ListOtherContacts` must match the call that provided the sync token.
   x__xgafv: string, V1 error format.
     Allowed values
       1 - v1 error format
@@ -1417,7 +1417,7 @@
         },
       ],
       "metadata": { # The metadata about a person. # Output only. Metadata about the person.
-        "deleted": True or False, # Output only. True if the person resource has been deleted. Populated only for [`connections.list`](/people/api/rest/v1/people.connections/list) requests that include a sync token.
+        "deleted": True or False, # Output only. True if the person resource has been deleted. Populated only for [`connections.list`](/people/api/rest/v1/people.connections/list) and [`otherContacts.list`](/people/api/rest/v1/otherContacts/list) requests that include a sync token.
         "linkedPeopleResourceNames": [ # Output only. Resource names of people linked to this resource.
           "A String",
         ],
@@ -2297,7 +2297,7 @@
           },
         ],
         "metadata": { # The metadata about a person. # Output only. Metadata about the person.
-          "deleted": True or False, # Output only. True if the person resource has been deleted. Populated only for [`connections.list`](/people/api/rest/v1/people.connections/list) requests that include a sync token.
+          "deleted": True or False, # Output only. True if the person resource has been deleted. Populated only for [`connections.list`](/people/api/rest/v1/people.connections/list) and [`otherContacts.list`](/people/api/rest/v1/otherContacts/list) requests that include a sync token.
           "linkedPeopleResourceNames": [ # Output only. Resource names of people linked to this resource.
             "A String",
           ],