fix(deps): do not depend on protobufjs; bump dep in samples (#911)

* fix(deps): update dependency protobufjs to v7

* fix(deps): do not depend on protobufjs directly

Co-authored-by: Alexander Fenster <[email protected]>

Author: renovate-bot

package.json

@@ -49,7 +49,6 @@
     "@google-cloud/common": "^4.0.0",
     "@types/pumpify": "^1.4.1",
     "google-gax": "^3.1.2",
-    "protobufjs": "^6.8.6",
     "pumpify": "^2.0.0",
     "stream-events": "^1.0.4",
     "uuid": "^8.3.2"

samples/package.json

@@ -22,7 +22,7 @@
     "google-proto-files": "^2.5.0",
     "node-record-lpcm16": "^1.0.1",
     "proto3-json-serializer": "^0.1.6",
-    "protobufjs": "^6.11.2",
+    "protobufjs": "^7.0.0",
     "sox": "^0.1.0",
     "yargs": "^16.0.0"
   },