MariaDB 11.6 and 11.7 contexts

[liviuconcioiu]

11.7 is still alpha, but some new functions and ROW data type were added.

https://mariadb.com/kb/en/mariadb-11-6-0-release-notes/
https://mariadb.com/kb/en/mariadb-11-7-0-release-notes/

[niconoe-]

Here you go 😄

I made it from 5.10.x but you definitly can merge into both 5.10.x and 5.11.x IMO.