Bump mods/character_creator from `190ffb6` to `f8d6f90`

Bumps [mods/character_creator](https://github.com/minetest-mods/character_creator) from `190ffb6` to `f8d6f90`.
- [Release notes](https://github.com/minetest-mods/character_creator/releases)
- [Commits](https://github.com/minetest-mods/character_creator/compare/190ffb6236d2a70f8f010864df163670139c8a6b...f8d6f90d0c8570a9aab48aad0ed84fcb601cf474)

character_creator @ f8d6f90d

-Subproject commit 190ffb6236d2a70f8f010864df163670139c8a6b
+Subproject commit f8d6f90d0c8570a9aab48aad0ed84fcb601cf474