Log Message:
jwm: update to 2.4.1.

Upstream changes:
 https://github.com/joewing/jwm/releases/tag/v2.4.1

What's Changed

  * Make JPEG backgrounds not blurry by @shlomif in #530
  * Ukrainian translations by @TarasPanchenko in #538
  * Middle click close on taskbar by @keshto in #548
  * Fix broken text in menu button #534
  * Fix crash at startup with floating point exception #537
  * Fix icons with a dot (.) in the filename are not found #536
  * Fix Alt+tab being assigned even when not assigned in jwmrc #543

New Contributors

  * @shlomif made their first contribution in #530
  * @TarasPanchenko made their first contribution in #538
  * @keshto made their first contribution in #548