ruby30 will be removed before September and ruby31 is already the default.
commit 3e5993a3a93376fc4e4c7594ac6e82d95a1eeb6f Author: Hans de Graaff <graaff@gentoo.org> Date: Sun Jun 25 15:53:13 2023 +0200 app-admin/r10k: add 3.15.4 Signed-off-by: Hans de Graaff <graaff@gentoo.org>