Bump @grpc/grpc-js from 1.7.2 to 1.8.8 in /_ext/node

Bumps [@grpc/grpc-js](https://github.com/grpc/grpc-node) from 1.7.2 to 1.8.8.
- [Release notes](https://github.com/grpc/grpc-node/releases)
- [Commits](https://github.com/grpc/grpc-node/compare/@grpc/grpc-js@1.7.2...@grpc/grpc-js@1.8.8)

---
updated-dependencies:
- dependency-name: "@grpc/grpc-js"
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

_ext/node/package.json

@@ -30,15 +30,15 @@
   "main": "./dist/index.js",
   "types": "./typings/index.d.ts",
   "dependencies": {
-    "@grpc/grpc-js": "1.7.2",
+    "@grpc/grpc-js": "1.8.8",
     "google-protobuf": "^3.21.2"
   },
   "devDependencies": {
     "@babel/cli": "^7.19.3",
     "@babel/core": "^7.0.0-0",
     "@babel/preset-env": "^7.19.4",
     "@babel/preset-typescript": "^7.18.6",
-    "@grpc/grpc-js": "1.7.2",
+    "@grpc/grpc-js": "1.8.8",
     "@jest/globals": "^29.2.0",
     "@types/jest": "^29.1.2",
     "async": "^1.5.2",