fix(deps): update dependency proto3-json-serializer to v3

Author: renovate-bot

packages/google-cloud-speech/samples/package.json

@@ -21,7 +21,7 @@
     "fs.promises": "^0.1.2",
     "google-proto-files": "^4.0.0",
     "node-record-lpcm16": "^1.0.1",
-    "proto3-json-serializer": "^2.0.0",
+    "proto3-json-serializer": "^3.0.0",
     "protobufjs": "^7.0.0",
     "sox": "^0.1.0",
     "yargs": "^17.0.0"