Release v3.0.12

This is a stable release suitable for use on Mainnet Beta.

⚠️ ATTENTION REQUIRED: as of Agave v3.0.0 Anza will no longer publish the agave-validator binary. Operators will need to build agave from source following these instructions: https://docs.anza.xyz/cli/install#build-from-source

What's Changed

• v3.0: Sort in descending stake order (backport of #8787) by @mergify[bot] in #8805
• Bump version to v3.0.12 by @github-actions[bot] in #9227

Full Changelog: v3.0.11...v3.0.12