D20507: Update Japanese holidays

[Ryunosuke Toda]

Herald added a project: Frameworks.
Herald added a subscriber: kde-frameworks-devel.

REPOSITORY
  R175 KHolidays

REVISION DETAIL
  https://phabricator.kde.org/D20507

To: nhiga, #kde_pim, dvratil
Cc: kde-frameworks-devel, ryunosuke, dvratil, kde-pim, LeGast00n, cblack, fbampaloukas, GB_2, dcaliste, michaelh, ngraham, bruns, dvasin, rodsevich, winterz, vkrause, mlaurent, knauss
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