fix(deps): update dependency @google-cloud/pubsub to v2.18.3 (#489)
fix(deps): update dependency @google-cloud/pubsub to v2.18.3 (#489)

Co-authored-by: sofisl <db5f31dcffac94c616d6f139fc6a9d43079218ec@users.noreply.github.com>
GoogleCloudPlatform/nodejs-getting-started,GoogleCloudPlatform/nodejs-getting-started,GoogleCloudPlatform/nodejs-getting-started