Bump types-protobuf from 5.29.1.20250403 to 6.30.2.20250516 (#160)

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Author: matthias-wende-frequenz

pyproject.toml

@@ -84,7 +84,7 @@ dev-mypy = [
   "grpc-stubs == 1.53.0.6",
   "pandas-stubs == 2.2.3.250308",
   "types-Markdown == 3.8.0.20250415",
-  "types-protobuf == 5.29.1.20250403",
+  "types-protobuf == 6.30.2.20250516",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-client-electricity-trading[dev-mkdocs,dev-noxfile,dev-pytest]",
 ]