Bump protobuf from 4.25.3 to 5.29.6 in /simple

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 4.25.3 to 5.29.6.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Commits](https://github.com/protocolbuffers/protobuf/commits)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-version: 5.29.6
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

simple/requirements.txt

@@ -15,7 +15,7 @@ numpy==1.25.2
 pandas==2.1.0
 parameterized==0.9.0
 platformdirs==3.10.0
-protobuf==4.25.3
+protobuf==5.29.6
 PyMySQL==1.1.0
 python-dateutil==2.8.2
 pytest==7.4.2