fix: Bump up protobuf to solve CVE-2026-0994

This commit bumps up the version of `protobuf` dependency to solve CVE-2026-0994.
Enabled `protobuf` version 5.29.6+ and 6.33.5+.

Signed-off-by: Paulo Vital <paulo.vital@ibm.com>

Author: pvital

pyproject.toml

@@ -47,7 +47,8 @@ dependencies = [
     "basictracer>=3.1.0",
     "fysom>=2.1.2",
     "opentracing>=2.3.0",
-    "protobuf<5.0.0",
+    "protobuf>=5.29.6; python_version < '3.9'",
+    "protobuf (>=6.33.5,<7.0); python_version >= '3.9'",
     "requests>=2.6.0",
     "six>=1.12.0",
     "urllib3>=1.26.5",