glib: Update to version 2.88.2

glib: Update to version 2.88.2

- Update from version 2.88.1 to 2.88.2
- Update of rootfile
- Changelog
2.88.2
* Bugs fixed:
  - !5178 Backport !5176 “gnulib: Fix unused flags variable warning” to
    glib-2-88
  - !5179 Update German translation
  - !5181 Update Thai translation
  - !5203 Update Basque translation
  - !5208 Update Italian translation
  - !5219 Backport !5209 “CI: set msys2-clang64 as default job for merges” to
    glib-2-88
  - !5220 Update Polish translation

* Translation updates:
  - Basque (Asier Saratsua Garmendia)
  - German (Jürgen Benvenuti)
  - Italian (Davide Ferracin)
  - Polish (Victoria Niedzielska)
  - Thai (Aefgh Threenine)

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>