chore: release 4.2.6 (#596)

🤖 I have created a release \*beep\* \*boop\*
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### [4.2.6](https://www.github.com/googleapis/nodejs-language/compare/v4.2.5...v4.2.6) (2021-06-30)


### Bug Fixes

* **deps:** google-gax v2.17.0 with mTLS ([#595](https://www.github.com/googleapis/nodejs-language/issues/595)) ([3ac3cfb](https://www.github.com/googleapis/nodejs-language/commit/3ac3cfb8d0ce0ba055502e07178764555d020622))
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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]

cloud-language/snippets/package.json

@@ -17,7 +17,7 @@
   "dependencies": {
     "@google-cloud/automl": "^2.0.0",
     "mathjs": "^9.0.0",
-    "@google-cloud/language": "^4.2.5",
+    "@google-cloud/language": "^4.2.6",
     "@google-cloud/storage": "^5.0.0",
     "yargs": "^16.0.0"
   },