regen: Regenerate Google.Cloud.Memorystore.V1 at API commit b60f5a5

feat: A new field `Instance.simulate_maintenance_event` is added to message `.google.cloud.memorystore.v1.`
feat: A new field `satisfies_pzs` is added to message `.google.cloud.memorystore.v1.Instance`
feat: A new field `satisfies_pzi` is added to message `.google.cloud.memorystore.v1.Instance`
feat: A new field `kms_key` is added to message `.google.cloud.memorystore.v1.Instance`
feat: A new field `encryption_info` is added to message `.google.cloud.memorystore.v1.Instance`
feat: A new field `maintenance_version` is added to message `.google.cloud.memorystore.v1.Instance`
feat: A new field `effective_maintenance_version` is added to message `.google.cloud.memorystore.v1.Instance`
feat: A new field `available_maintenance_versions` is added to message `.google.cloud.memorystore.v1.Instance`
feat: A new field `allow_fewer_zones_deployment` is added to message `.google.cloud.memorystore.v1.Instance`
feat: A new field `total_backup_size_bytes` is added to message `.google.cloud.memorystore.v1.BackupCollection`
feat: A new field `total_backup_count` is added to message `.google.cloud.memorystore.v1.BackupCollection`
feat: A new field `last_backup_time` is added to message `.google.cloud.memorystore.v1.BackupCollection`
feat: A new field `encryption_info` is added to message `.google.cloud.memorystore.v1.Backup`
feat: A new message `EncryptionInfo` is added
docs: A comment for field `discovery_endpoints` in message `.google.cloud.memorystore.v1.Instance` is changed


PiperOrigin-RevId: 844938993
Source-Link: googleapis/googleapis@b60f5a5

Author: google-cloud-sdk-librarian-dotnet-robot