chore: temporarily block releases for half of libraries

[ldetmer]

Due to release freeze we need to rollout the latest release in batches. This will block releases for half the libraries, and then after we perform one release, we will revert this chage.

[gemini-code-assist]

Summary of Changes

Hello @ldetmer, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request implements a temporary configuration change to manage a release freeze. It strategically blocks releases for a large set of libraries, enabling a phased rollout of the latest release. This approach ensures a controlled and batched release process, with the intention to revert these blocking configurations once the initial release phase is complete.

Highlights

• Temporary Release Block: This pull request temporarily blocks releases for a significant number of libraries by setting their release_blocked flag to true in the .librarian/config.yaml file.
• Staged Rollout Strategy: The blocking of releases is a temporary measure implemented to facilitate a staged rollout of the latest release in batches, as part of a broader release freeze strategy.
• Reversion Plan: The changes introduced in this PR are temporary and will be reverted after the initial batch of releases has been performed.

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[gemini-code-assist]

Code Review

This pull request temporarily blocks releases for a large number of libraries by updating the .librarian/config.yaml file. The change is for a batched release rollout. My feedback focuses on improving the maintainability of this large configuration change. I've suggested adding a comment explaining the temporary nature of the block and ensuring the list of libraries is sorted alphabetically to make it easier to manage.