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.people.connections.html b/docs/dyn/people_v1.people.connections.html
index b6c29e2..d746ef0 100644
--- a/docs/dyn/people_v1.people.connections.html
+++ b/docs/dyn/people_v1.people.connections.html
@@ -112,7 +112,7 @@
       READ_SOURCE_TYPE_PROFILE - Returns SourceType.ACCOUNT, SourceType.DOMAIN_PROFILE, and SourceType.PROFILE.
       READ_SOURCE_TYPE_CONTACT - Returns SourceType.CONTACT.
       READ_SOURCE_TYPE_DOMAIN_CONTACT - Returns SourceType.DOMAIN_CONTACT.
-  syncToken: string, Optional. A sync token, received from a previous `ListConnections` call. Provide this to retrieve only the resources changed since the last request. When syncing, all other parameters provided to `ListConnections` except `page_size` and `page_token` must match the initial call that provided the sync token. Sync tokens expire after seven days, after which a full sync request without a `sync_token` should be made.
+  syncToken: string, Optional. A sync token, received from a previous `ListConnections` call. Provide this to retrieve only the resources changed since the last request. 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 `ListConnections` except `page_size` and `page_token` must match the initial call that provided the sync token. Sync tokens expire after seven days, after which a full sync request without a `sync_token` should be made.
   x__xgafv: string, V1 error format.
     Allowed values
       1 - v1 error format
@@ -554,7 +554,7 @@
         },
       ],
       "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",
         ],