chore(deps): update dependency google_cloud_cpp to v2.31.0

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
google_cloud_cpp	http_archive	minor	v2.30.0 -> v2.31.0

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Release Notes

googleapis/google-cloud-cpp (google_cloud_cpp)

v2.31.0

Compare Source

New Libraries

We are happy to announce the following GA libraries. Unless specifically noted,
the APIs in these libraries are stable, and are ready for production use.

• ParallelStore API

Pub/Sub

• docs(pubsub): Fix region tags for Pub/Sub ingestion from GCS samples (#​14773)

Storage

• docs(storage): better suggestion for deprecated API (#​14786)

Common Libraries

• feat(oauth2): add support for external account workforce identity (#​14800)
• feat: API key authentication (#​14779)
• feat(mixin): generate mixins for libraries (#​14766)

Google APIs interface definitions

• This release is based on definitions as of 2024-10-31T11:22:40-07:00

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[dpebot]

/gcbrun