message: fix(types): extend constructor options from gax
diff: @@ -54,7 +54,7 @@ import {Bucket} from '@google-cloud/storage'; // types only
  import {Dataset, BigQuery} from '@google-cloud/bigquery'; // types only
  import {Topic} from '@google-cloud/pubsub'; // types only
  -export interface LoggingOptions extends gax.GoogleAuthOptions {
  +export interface LoggingOptions extends gax.GrpcClientOptions {
  autoRetry?: boolean;
  maxRetries?: number;
  apiEndpoint?: string;
  