Update hst-install-ubuntu.sh (#2093)

Change MariaDB version to 10.6

install/hst-install-ubuntu.sh

@@ -28,7 +28,7 @@ pma_v='5.1.1'
 rc_v="1.4.11"
 multiphp_v=("5.6" "7.0" "7.1" "7.2" "7.3" "7.4" "8.0")
 fpm_v="7.4"
-mariadb_v="10.5"
+mariadb_v="10.6"
 
 # Defining software pack for all distros
 software="apache2 apache2.2-common apache2-suexec-custom apache2-utils