chore(main): release 4.0.1 (#611)

🤖 I have created a release *beep* *boop*
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## [4.0.1](googleapis/nodejs-text-to-speech@v4.0.0...v4.0.1) (2022-06-30)


### Bug Fixes

* **docs:** describe fallback rest option ([#610](googleapis/nodejs-text-to-speech#610)) ([26bc91a](googleapis/nodejs-text-to-speech@26bc91a))

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texttospeech/package.json

@@ -14,7 +14,7 @@
     "test": "mocha --timeout=60000"
   },
   "dependencies": {
-    "@google-cloud/text-to-speech": "^4.0.0",
+    "@google-cloud/text-to-speech": "^4.0.1",
     "yargs": "^16.0.0"
   },
   "devDependencies": {