[ticket/12367] Change phpbb_wrapper_gmgetdate_test to use data providers

PHPBB3-12367
Merge remote-tracking branch 'github-nickvergessen/ticket/12367' into develop-ascraeus

* github-nickvergessen/ticket/12367:
  [ticket/12367] Change phpbb_wrapper_gmgetdate_test to use data providers
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12367] Change phpbb_wrapper_gmgetdate_test to use data providers