chore(deps): bump grpcio-reflection in /http2/python-grpc

Bumps [grpcio-reflection](https://grpc.io) from 1.72.1 to 1.73.0.

---
updated-dependencies:
- dependency-name: grpcio-reflection
  dependency-version: 1.73.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

http2/python-grpc/requirements.txt

@@ -1,2 +1,2 @@
-grpcio-reflection==1.72.1
+grpcio-reflection==1.73.0
 grpcio==1.73.0