message: fix(deps): pin to newer version of grpc
diff: "predocs-test": "npm run docs"
  },
  "dependencies": {
  - "@google-cloud/common-grpc": "^1.0.5",
  + "@google-cloud/common-grpc": "^1.0.6",
  "@google-cloud/paginator": "^2.0.0",
  "@google-cloud/projectify": "^1.0.0",
  "@google-cloud/promisify": "^1.0.0",
  