Bump grpc-stubs from 1.53.0.5 to 1.53.0.6

Bumps [grpc-stubs](https://github.com/shabbyrobe/grpc-stubs) from 1.53.0.5 to 1.53.0.6.
- [Commits](shabbyrobe/grpc-stubs@1.53.0.5...1.53.0.6)

---
updated-dependencies:
- dependency-name: grpc-stubs
  dependency-version: 1.53.0.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pyproject.toml

@@ -27,7 +27,7 @@ classifiers = [
 requires-python = ">= 3.11, < 4"
 dependencies = [
   "typing_extensions >= 4.6.1, < 5",
-  "grpc-stubs == 1.53.0.5",
+  "grpc-stubs == 1.53.0.6",
   "frequenz-api-reporting >= 0.7.0, < 0.8",
   "frequenz-client-common >= 0.3.0, < 0.4",
   "grpcio >=1.70.0, < 2",