systemd/plasma-workspace: upgrade to 6.4.4

[ci:skip-build]: CI has passed for all arches, but armv7 and riscv64. It
has already been doing these for 3 hours and would probably take another
3h to complete... seems unlikely that it will fail here from past
experience, so I'll just skip these here as this will fix a lot of
errors.

Related: https://gitlab.alpinelinux.org/alpine/aports/-/commit/715fc4ee47defccc2187b542dc77481c90a02c0a
Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/6931>

extra-repos/systemd/plasma-workspace/APKBUILD

@@ -1,8 +1,8 @@
 # Forked from Alpine to add systemd!
 
 pkgname=plasma-workspace
-pkgver=99996.4.2
-_pkgver=6.4.2
+pkgver=99996.4.4
+_pkgver=6.4.4
 pkgrel=0
 pkgdesc="KDE Plasma Workspace"
 # armhf blocked by qt6-qtdeclarative
@@ -203,5 +203,5 @@ x11() {
 }
 
 sha512sums="
-48e1b93f87394d8b302b34d6c1b202c43f853d2c1b184d5527f987e103672aa8e07fdce8c36d28f8f2887a623451bf44cb8d4780cf5d771833919952b04b527f  plasma-workspace-6.4.2.tar.xz
+eaf24169f7354ea69bb5f439d4391a732a2a13de477293009993b80898ffbb5a143de2aa8026388d764b1f256e57cb650162f34506c41e1e4515c0df1f553e88  plasma-workspace-6.4.4.tar.xz
 "