fix mypy

Author: wxtim

setup.cfg

@@ -128,7 +128,7 @@ tests =
     # Type annotation stubs
     # http://mypy-lang.blogspot.com/2021/05/the-upcoming-switch-to-modular-typeshed.html
     types-Jinja2>=0.1.3
-    types-protobuf>=0.1.10
+    types-protobuf>=0.1.10,<5.29.1.20250402
     types-six>=0.1.6
     typing-extensions>=4
 tutorials =