How to update Mysql 5.5 to 5.6 or later in plesk 12.?

I need to know how I can update MySQL version 5.5 to 5.6 or later version in my Plesk control panel. I am using centos 7 with Plesk version 12.5.30 in my dedicated server .

I am trying to install Magento application version 2.0.7 on my server . it's required MySQL version 5.6 or later version . I searched everywhere in my Plesk root control panel but I couldn't find any option to update MySQL