Upgrades Jollyday 0.5.10 (de.jollyday) to 0.23.2 of a more actively maintained fork (de.focus-shift).
* This adds many missing holidays.
* Also removes the workaround for the Danish Great Prayer Day introduced by #3573.
For release notes, see:
https://github.com/focus-shift/jollyday/releasesFixes#3544
Signed-off-by: Wouter Born <github@maindrain.net>
