fix(deps): use grpc-gcp v1.0.0 (#1710)

Author: alexander-fenster

package.json

@@ -65,7 +65,7 @@
     "extend": "^3.0.2",
     "google-auth-library": "^8.0.2",
     "google-gax": "^3.0.1",
-    "grpc-gcp": "^0.4.0",
+    "grpc-gcp": "^1.0.0",
     "is": "^3.2.1",
     "lodash.snakecase": "^4.1.1",
     "merge-stream": "^2.0.0",