Make updating CrT GameStageUnlockable update the stored version in the config.

When I was doing Custom Traits I did not realize there was a "dummy trait" So before the next version I should make this also work.

https://github.com/Coders-After-Dark/CompatSkills/blob/master/src/main/java/codersafterdark/compatskills/common/compats/gamestages/gamestageunlockable/GameStageUnlockable.java