message: lock protobuf
diff: "eslint-plugin-import": "^2.20.0",
  "eslint-plugin-mocha": "^6.2.2",
  "eslint-plugin-prettier": "^3.1.2",
  - "grpc-tools": "1.8.1",
  + "grpc-tools": "1.8.0",
  "grpc_tools_node_protoc_ts": "2.5.9",
  "mocha": "7.0.0",
  "mocha-lcov-reporter": "1.3.0",
  },
  "dependencies": {
  "grpc": "1.24.2",
  - "ts-protoc-gen": "^0.12.0",
  "xpring-common-js": "2.0.1"
  },
  "nyc": {
  