Bump protobuf

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 4.25.8 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]

onnxruntime/python/tools/transformers/models/stable_diffusion/requirements/requirements.txt

@@ -6,7 +6,7 @@ accelerate
 onnx==1.18.0
 packaging
 # Use newer version of protobuf might cause crash
-protobuf==4.25.8
+protobuf==5.29.6
 psutil
 sympy
 nvtx==0.2.5