bump protobuf

Signed-off-by: Jesús Fernández <7312236+fernandezcuesta@users.noreply.github.com>

Author: fernandezcuesta

pyproject.toml

@@ -19,7 +19,7 @@ classifiers = [
 dependencies = [
   "grpcio==1.*",
   "grpcio-reflection==1.*",
-  "protobuf==5.27.2",
+  "protobuf==5.28.3",
   "pydantic==2.*",
   "structlog==24.*",
 ]