Bump the pip-dependencies group with 2 updates (#389)

Bumps the pip-dependencies group with 2 updates: [keyring](https://github.com/jaraco/keyring) and [protobuf](https://github.com/protocolbuffers/protobuf).


Updates `keyring` from 25.3.0 to 25.4.1
- [Release notes](https://github.com/jaraco/keyring/releases)
- [Changelog](https://github.com/jaraco/keyring/blob/main/NEWS.rst)
- [Commits](jaraco/keyring@v25.3.0...v25.4.1)

Updates `protobuf` from 5.28.1 to 5.28.2
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v5.28.1...v5.28.2)

---
updated-dependencies:
- dependency-name: keyring
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pip-dependencies
- dependency-name: protobuf
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: pip-dependencies
...

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

requirements.txt

@@ -10,12 +10,12 @@ grpcio-tools==1.66.1
 idna==3.10
 importlib-metadata==8.5.0
 jaraco.classes==3.4.0
-keyring==25.3.0
+keyring==25.4.1
 markdown-it-py==3.0.0
 mdurl==0.1.2
 more-itertools==10.5.0
 pkginfo>=1.8.1
-protobuf==5.28.1
+protobuf==5.28.2
 pyfakefs==5.6.0
 Pygments==2.18.0
 readme-renderer==44.0