chore: release 4.0.1 (#462)

* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Author: release-please[bot]

cloud-language/snippets/package.json

@@ -17,7 +17,7 @@
   "dependencies": {
     "@google-cloud/automl": "^2.0.0",
     "mathjs": "^7.0.0",
-    "@google-cloud/language": "^4.0.0",
+    "@google-cloud/language": "^4.0.1",
     "@google-cloud/storage": "^5.0.0",
     "yargs": "^15.0.0"
   },