Hopefully someone else than Andrew or Sergei replies as a project of the size of MariaDB should have multiple developers who are capable of reviewing PRs, and not overload a few.

These PRs already have one approval, but would need a second to be
merged. If you feel you are knowledgeable in the domain of the PRs,
please help out by reviewing them. Thanks!

https://github.com/MariaDB/server/pull/3225: MDEV-29955: add
${PCRE_LIBRARY_PATH} to link directories

https://github.com/MariaDB/server/pull/3540: Add MTRs to further test
coverage around TLS functionality