gnome-base/gnome-core-apps: bump to 3.34.4

gnome-base/gnome-core-apps: bump to 3.34.4

eog and adwaita-icon-theme deps aren't raised for now, because they
depend on rust librsvg, which needs to be provided first (waiting
on rust-bin multilib work). eog has an explicit dependency on newer
librsvg, while adwaita-icon-theme doesn't, but PNG images generated
with an older non-rust librsvg are corrupted due to some SVG
handling updates that old librsvg apparently can't handle properly.
Hopefully the expected small 3.34.5 update can raise these deps
to 3.34 versions.

Package-Manager: Portage-2.3.84, Repoman-2.3.20
Signed-off-by: Mart Raudsepp <leio@gentoo.org>