fix(deps): update dependency @grpc/proto-loader to ^0.8.0 (#1782)

Co-authored-by: danieljbruce <[email protected]>

Author: renovate-bot

gax/package.json

@@ -11,7 +11,7 @@
   ],
   "dependencies": {
     "@grpc/grpc-js": "^1.12.6",
-    "@grpc/proto-loader": "^0.7.13",
+    "@grpc/proto-loader": "^0.8.0",
     "abort-controller": "^3.0.0",
     "duplexify": "^4.1.3",
     "google-auth-library": "^10.1.0",