Update release notes for v24.3-v24.3.24

Author: Automated Release Bot

src/current/_includes/releases/v24.3/v24.3.24.md

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+## v24.3.24
+
+Release Date: December 12, 2025
+
+{% include releases/new-release-downloads-docker-image.md release=include.release %}
+
+<h3 id="v24-3-24-bug-fixes">Bug fixes</h3>
+
+- A mechanism that prevents unsafe replication changes from causing loss of quorum now functions correctly. An internal function has been fixed to properly return errors, enhancing the reliability of replication safeguards. [#156520][#156520]
+
+
+[#156520]: https://github.com/cockroachdb/cockroach/pull/156520