fix(deps): update dependency chalk to v4 (#567)

Author: renovate-bot

speech/package.json

@@ -13,7 +13,7 @@
   "dependencies": {
     "@google-cloud/speech": "^3.6.0",
     "@google-cloud/storage": "^4.0.0",
-    "chalk": "^3.0.0",
+    "chalk": "^4.0.0",
     "node-record-lpcm16": "^1.0.1",
     "sox": "^0.1.0",
     "yargs": "^15.0.0"