Stop AUR sync for v4l2-relayd

The sync regenerated the PKGBUILD from AUR and clobbered the splashsrc
patch (restored in 564d0b4). Pin it so the local changes survive.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

pkgbuilds/v4l2-relayd/.omarchy/package.json

@@ -1,5 +1,6 @@
 {
   "source": "aur",
+  "sync": false,
   "pkgrel": {
     "suffix": 2,
     "offset": 1