Bump MODULE_VERSION to 5.1.2
Bump MODULE_VERSION to 5.1.2

Change-Id: Ifac7344b43c99a2f31f4a217ef537931092f7dd8
Reviewed-by: Oswald Buddenhagen <6a8868beda3e139b5ac22b2534a23d3e6ba81819@digia.com>

kobolabs/qtgraphicaleffects