Bump protobuf from 3.20.0 to 3.20.1 (#425)

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 3.20.0 to 3.20.1.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/generate_changelog.py)
- [Commits](protocolbuffers/protobuf@v3.20.0...v3.20.1)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements/python.txt

@@ -6,7 +6,7 @@ matplotlib==3.5.1
 opencv-python-headless==4.5.5.64
 pandas==1.4.2
 Pillow==9.1.0
-protobuf==3.20.0
+protobuf==3.20.1
 scikit-learn==1.0.2
 scipy==1.8.0
 tensorboardX==2.5