---
upgrade:
  - |
    Debian now uses upstream MariaDB repos (thus following Ubuntu
    images). This is done to avoid issues like the related one and
    have an easy workaround of pinning to chosen MariaDB version if
    need arises.
    Operators may want to reflect this in their repo mirrors and
    proxies.
    `LP#1944410 <https://launchpad.net/bugs/1944410>`__