Bump MODULE_VERSION to 5.2.1
Bump MODULE_VERSION to 5.2.1

Change-Id: I111d9902592255ee41a665b5b34e14f4885e9136
Reviewed-by: Matti Paaso <8b91ebfd223df5af67c6a381ab439b00620de590@digia.com>
Reviewed-by: Oswald Buddenhagen <6a8868beda3e139b5ac22b2534a23d3e6ba81819@digia.com>

Distrotech/qttranslations,qtproject/qttranslations