build(deps): bump protobuf from 5.28.2 to 5.28.3

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 5.28.2 to 5.28.3.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v5.28.2...v5.28.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -79,7 +79,7 @@ pkce==1.0.3
 praw==7.8.0
 prawcore==2.4.0
 proto-plus==1.24.0
-protobuf==5.28.2
+protobuf==5.28.3
 pyasn1==0.6.1
 pyasn1-modules==0.4.1
 pycparser==2.22