Bump protobuf from 4.25.2 to 6.33.4

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 4.25.2 to 6.33.4.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Commits](https://github.com/protocolbuffers/protobuf/commits)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-version: 6.33.4
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

requirements.txt

@@ -6,7 +6,7 @@ transformers
 tqdm
 einops
 sentencepiece
-protobuf==4.25.2
+protobuf==6.33.4
 scikit-learn
 matplotlib
 pandas