quickshell-git: build v0.3.2, which compiles against Qt 6.12 (#863)

The pinned 0.3.0.r20 commit fails Qt 6.12's "Meta Types must be fully
defined" assertion in the PipeWire service, which kept the rebuild PR red.

pkgbuilds/quickshell-git/.omarchy/package.json

@@ -8,9 +8,9 @@
   ],
   "rebuilt_against": {
     "x86_64": {
-      "qt6-base": "6.11.2-3",
-      "qt6-declarative": "6.11.2-2",
-      "qt6-wayland": "6.11.2-1"
+      "qt6-base": "6.12.0-2",
+      "qt6-declarative": "6.12.0-1",
+      "qt6-wayland": "6.12.0-1"
     }
   },
   "origin": {