colorzones: fix correctly specify the version of presets (bug #9449)

Hi,
this is a fix of bug #9449 : [1.2.1] Color zones presets inactive. 

colorzones: fix correctly specify the version of presets
using self->version() rather than a constant number in order to not add a new bug when merging on master because of colorzones module version is different (3 instead of 2 on this branch)
This replace de previous fix commit 6a19c6694de6ddb27f76b63532a35a51857eaf92.

I don't know if this is the correct way to define presets module version, but it is used on some other modules...

Regards
Loic G.