Fix the translation template version number (add "6")
Purpose was born directly directly in the KF5 time and the translation templates did not contain "5", but the number is needed now because KF5 and KF6 have to be be co-installable.
Purpose was born directly directly in the KF5 time and the translation templates did not contain "5", but the number is needed now because KF5 and KF6 have to be be co-installable.