BREAKING chore(dblord): upgrade to current LTS release

After restarting with the new version, `mariadb-upgrade` should be run.

dblord/Dockerfile

@@ -1,4 +1,4 @@
-FROM mariadb:10.3
+FROM mariadb:10.11
 
 # Use random throw-away root password. Our init scripts switch authentication to socket logins only
 ENV MYSQL_RANDOM_ROOT_PASSWORD=yes