build(deps): bump google-cloud-storage in /examples/python (#1510)

Bumps [google-cloud-storage](https://github.com/googleapis/python-storage) from 2.14.0 to 2.15.0.
- [Release notes](https://github.com/googleapis/python-storage/releases)
- [Changelog](https://github.com/googleapis/python-storage/blob/main/CHANGELOG.md)
- [Commits](googleapis/python-storage@v2.14.0...v2.15.0)

---
updated-dependencies:
- dependency-name: google-cloud-storage
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

examples/python/requirements.txt

@@ -10,30 +10,30 @@ certifi==2023.7.22
     # via requests
 charset-normalizer==2.0.6
     # via requests
-google-api-core==2.7.1
+google-api-core==2.17.1
     # via
     #   google-cloud-core
     #   google-cloud-storage
-google-auth==2.23.3
+google-auth==2.28.1
     # via
     #   google-api-core
     #   google-cloud-core
     #   google-cloud-storage
 google-cloud-core==2.3.0
     # via google-cloud-storage
-google-cloud-storage==2.14.0
+google-cloud-storage==2.15.0
     # via -r requirements.in
 google-crc32c==1.3.0
     # via
     #   google-cloud-storage
     #   google-resumable-media
 google-resumable-media==2.6.0
     # via google-cloud-storage
-googleapis-common-protos==1.53.0
+googleapis-common-protos==1.62.0
     # via google-api-core
 idna==3.2
     # via requests
-protobuf==3.18.3
+protobuf==4.25.3
     # via
     #   google-api-core
     #   googleapis-common-protos