build(deps): bump grpcio-tools from 1.63.2 to 1.73.1

Bumps [grpcio-tools](https://github.com/grpc/grpc) from 1.63.2 to 1.73.1.
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.63.2...v1.73.1)

---
updated-dependencies:
- dependency-name: grpcio-tools
  dependency-version: 1.73.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

opamp-gen-requirements.txt

@@ -1,5 +1,5 @@
 # Use caution when bumping this version to ensure compatibility with the currently supported protobuf version.
 # Pinning this to the oldest grpcio version that supports protobuf 5 helps avoid RuntimeWarning messages
 # from the generated protobuf code and ensures continued stability for newer grpcio versions.
-grpcio-tools==1.63.2
+grpcio-tools==1.73.1
 mypy-protobuf~=3.5.0