This update for mariadb fixes the following issues:

- Update to 10.6.20:
    https://mariadb.com/kb/en/mariadb-10-6-20-release-notes/
    https://mariadb.com/kb/en/mariadb-10-6-20-changelog/
    https://mariadb.com/kb/en/mariadb-10-6-19-release-notes/
    https://mariadb.com/kb/en/mariadb-10-6-19-changelog/
- Update list of skipped tests