Bump @grpc/grpc-js from 1.8.20 to 1.8.21

Bumps [@grpc/grpc-js](https://github.com/grpc/grpc-node) from 1.8.20 to 1.8.21.
- [Release notes](https://github.com/grpc/grpc-node/releases)
- [Commits](https://github.com/grpc/grpc-node/compare/@grpc/[email protected]...@grpc/[email protected])

---
updated-dependencies:
- dependency-name: "@grpc/grpc-js"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -36,7 +36,7 @@
     "typescript": "^5.1.6"
   },
   "dependencies": {
-    "@grpc/grpc-js": "^1.8.20",
+    "@grpc/grpc-js": "^1.8.21",
     "@medv/finder": "^3.1.0",
     "google-protobuf": "3.21.2",
     "pino": "^8.14.2",