Merge tag 'v1.0.51' of https://github.com/Etar-Group/Etar-Calendar into lineage-23.0

* tag 'v1.0.51' of https://github.com/Etar-Group/Etar-Calendar:
  New version 1.0.51
  Bump gradle version
  Update time zone database to 2025b
  Fix Event date picker for end date always preselects start
  Bump org.jetbrains.gradle.plugin.idea-ext from 1.1.10 to 1.2
  Bump androidx.lifecycle:lifecycle-livedata-ktx from 2.9.1 to 2.9.2
  Bump agp from 8.11.0 to 8.11.1
  Translated using Weblate (Korean)
  Translated using Weblate (Ukrainian)
  Translated using Weblate (Latvian)
  Translated using Weblate (French)
  Translated using Weblate (French)
  Translated using Weblate (Dutch)
  Translated using Weblate (Japanese)
  Translated using Weblate (German)
  Translated using Weblate (Czech)
  Replace Activity with Context so that the function isSystemInDarkTheme() can be called with any context.
  Improve readability of "guest badge" and solve lint warnings
  Replace deprecated onBackPressed() with getOnBackPressedDispatcher()
  Improve guest selection style so that the colors match the different themes. Also added support for vectorDrawables.
  Replace baseline vector icon with the corresponding outline version.

Change-Id: Ife6a92d1c23ff8b7b200837805f7551786c52923