chore(deps): bump @grpc/proto-loader in /http2/node-grpc

Bumps [@grpc/proto-loader](https://github.com/grpc/grpc-node) from 0.7.15 to 0.8.0.
- [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/proto-loader"
  dependency-version: 0.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

http2/node-grpc/package-lock.json

@@ -9,6 +9,6 @@
   "author": "",
   "dependencies": {
     "@grpc/grpc-js": "^1.13.4",
-    "@grpc/proto-loader": "^0.7.15"
+    "@grpc/proto-loader": "^0.8.0"
   }
 }