chore: release 4.1.2 (#641)

* chore: updated samples/package.json [ci skip]

* chore: updated CHANGELOG.md [ci skip]

* chore: updated package.json

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

Author: release-please[bot]

speech/package.json

@@ -11,7 +11,7 @@
     "test": "c8 mocha system-test --timeout 600000"
   },
   "dependencies": {
-    "@google-cloud/speech": "^4.1.1",
+    "@google-cloud/speech": "^4.1.2",
     "@google-cloud/storage": "^5.0.0",
     "chalk": "^4.0.0",
     "node-record-lpcm16": "^1.0.1",