chore: update sources and regenerate

[JoeWang1127]

No description provided.

[snippet-bot]

Here is the summary of changes.

You are about to add 3 region tags.

• internal/generated/snippets/ces/apiv1beta/AgentClient/GenerateAppResource/main.go:17, tag ces_v1beta_generated_AgentService_GenerateAppResource_sync
• internal/generated/snippets/memorystore/apiv1/Client/GetSharedRegionalCertificateAuthority/main.go:17, tag memorystore_v1_generated_Memorystore_GetSharedRegionalCertificateAuthority_sync
• internal/generated/snippets/redis/cluster/apiv1/CloudRedisClusterClient/GetSharedRegionalCertificateAuthority/main.go:17, tag redis_v1_generated_CloudRedisCluster_GetSharedRegionalCertificateAuthority_sync

---

This comment is generated by snippet-bot.
If you find problems with this result, please file an issue at:
https://github.com/googleapis/repo-automation-bots/issues.
To update this comment, add snippet-bot:force-run label or use the checkbox below:

• Refresh this comment

[gemini-code-assist]

Code Review

This pull request introduces several updates across multiple Google Cloud client libraries, including AI Platform, CES, Dataflow, Memorystore, Redis Cluster, and Text-to-Speech. Key changes include the addition of container specification support for Reasoning Engines, a new resource generation method in CES, SHA256 checksum fields for Dataflow packages, and shared regional certificate authority functionality for Memorystore and Redis. Additionally, the PR updates safety settings in Text-to-Speech and modifies the librarian configuration, which coincides with version adjustments in the Pub/Sub packages. I have no feedback to provide.