chore: release 2.2.7 (#305)

🤖 I have created a release \*beep\* \*boop\*
---
### [2.2.7](https://www.github.com/googleapis/nodejs-datalabeling/compare/v2.2.6...v2.2.7) (2021-08-17)


### Bug Fixes

* **build:** migrate to using main branch ([#304](https://www.github.com/googleapis/nodejs-datalabeling/issues/304)) ([8835988](https://www.github.com/googleapis/nodejs-datalabeling/commit/88359888f303d90d27b0449dd811e42dadebc5d2))
* **deps:** google-gax v2.24.1 ([#306](https://www.github.com/googleapis/nodejs-datalabeling/issues/306)) ([ea18b87](https://www.github.com/googleapis/nodejs-datalabeling/commit/ea18b87feff1da34b57decb44fea83b3b371b162))
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This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).

Author: release-please[bot]

datalabeling/package.json

@@ -14,7 +14,7 @@
     "test": "mocha --timeout 600000"
   },
   "dependencies": {
-    "@google-cloud/datalabeling": "^2.2.6"
+    "@google-cloud/datalabeling": "^2.2.7"
   },
   "devDependencies": {
     "chai": "^4.2.0",