main/postmarketos-artwork-wallpapers: new wallpaper (!320)

Use new wallpaper instead of the old one, and only install one wallpaper
file.

main/postmarketos-artwork-wallpapers/APKBUILD

@@ -3,7 +3,7 @@
 
 pkgname="postmarketos-artwork-wallpapers"
 pkgver=1
-pkgrel=4
+pkgrel=5
 pkgdesc="Wallpapers for postmarketOS"
 url="https://postmarketos.org/"
 arch="noarch"
@@ -15,8 +15,8 @@ options="!check"
 
 package() {
 	mkdir -p "$pkgdir"/usr/share/wallpapers/
-	cp -r "$srcdir"/artwork-$_hash/wallpapers/logo/* \
-		"$pkgdir"/usr/share/wallpapers/
+	cp -r "$srcdir"/artwork-$_hash/wallpapers/logo/pmos-grass-square.jpg \
+		"$pkgdir"/usr/share/wallpapers/postmarketos.jpg
 }
 
 extra() {