graphics(0.2.5): bump all KF6 frameworks 6.10→6.27, Plasma 6.3.4→6.7.2, remaining libs to latest stable

KF6 frameworks: 44 frameworks bumped from 6.10.0/6.26.0 to 6.27.0 (latest stable).
All switched to download.kde.org canonical release URLs with BLAKE3 hashes.

KDE Plasma packages bumped to 6.7.2 (latest stable):
- breeze 6.3.4→6.7.2
- plasma-workspace 6.3.4→6.7.2
- kf6-kwayland 6.3.4→6.7.2
- kf6-plasma-activities 6.6.5→6.7.2

Other graphics libs bumped to latest stable:
- libxkbcommon 1.9.2→1.11.0
- seatd-redox 0.9.3→0.10.1 (URL switched to gitlab.freedesktop.org)
- plasma-wayland-protocols 1.16.0→1.21.0

All BLAKE3 hashes computed from actual upstream tarballs.

local/recipes/kde/kf6-parts/recipe.toml

@@ -1,7 +1,8 @@
 #TODO: KF6Parts — KDE KPart component framework for embedding plugins.
 # Required by konsole for KPart terminal embedding.
 [source]
-tar = "https://invent.kde.org/frameworks/kparts/-/archive/v6.10.0/kparts-v6.10.0.tar.gz"
+tar = "https://download.kde.org/stable/frameworks/6.27/kparts-6.27.0.tar.xz"
+blake3 = "1863145efa41355679f3bdc4cdad7ced0f1c8ab411338edf518f1df732908eaf"
 
 [build]
 template = "custom"