community/plasma-wayland-protocols: bump pkgrel to avoid conflicts

this package already existed in 83df2b14

therefore now half the architectures fail with:
> ERROR: plasma-wayland-protocols-1.12.0-r0: BAD signature

community/plasma-wayland-protocols/APKBUILD

@@ -5,7 +5,7 @@
 # group=kde-other
 pkgname=plasma-wayland-protocols
 pkgver=1.12.0
-pkgrel=0
+pkgrel=1
 pkgdesc="Plasma Specific Protocols for Wayland"
 # armhf blocked by extra-cmake-modules
 arch="noarch !armhf"