Bump grpc from 1.24.0 to 1.24.11

Bumps [grpc](https://github.com/grpc/grpc-node) from 1.24.0 to 1.24.11.
- [Release notes](https://github.com/grpc/grpc-node/releases)
- [Commits](https://github.com/grpc/grpc-node/commits/[email protected])

---
updated-dependencies:
- dependency-name: grpc
  dependency-type: indirect
...

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

Author: dependabot[bot]