systemd/plasma*: upgrade to 6.4.2

Part-of: https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/6749

[ci:skip-build]: already built successfully in CI

extra-repos/systemd/kwin/APKBUILD

@@ -1,9 +1,9 @@
 # Forked from Alpine to add systemd!
 
 pkgname=kwin
-pkgver=99996.4.1
-_pkgver=6.4.1
-pkgrel=1
+pkgver=99996.4.2
+_pkgver=6.4.2
+pkgrel=0
 pkgdesc="An easy to use, but flexible, composited Window Manager"
 # armhf blocked by qt6-qtdeclarative and pmb#2618
 arch="all !armhf !armv7"
@@ -112,5 +112,5 @@ package() {
 	DESTDIR="$pkgdir" cmake --install build
 }
 sha512sums="
-d352fc5682a161b45a578f18be3bba1c309e2d9a3e676672f0ec11ad1f87230e4fd6e69e05ad3583c3db70f3ddc091f0056b439a282f8dbc194cb37453785cec  kwin-6.4.1.tar.xz
+89f2b11674f97b955e512813c2b1790044d430894aec449d40212fd258e4fdda77933666173c4dea16adcf1ed159a4e91cc90fc09aafc6d25b977a4c1f80f8f9  kwin-6.4.2.tar.xz
 "