cinnamon-screensaver: extract update_* to external update file

srcpkgs/cinnamon-screensaver/template

@@ -16,8 +16,6 @@ conf_files="/etc/pam.d/${pkgname}"
 maintainer="Juan RP <xtraeme@gmail.com>"
 license="GPL-3"
 homepage="http://cinnamon.linuxmint.com/"
-update_site="https://api.github.com/repos/linuxmint/$pkgname/tags"
-update_pattern='"name":\s*"\K[^\d]*([\d\.]+)(?=")'
 
 build_options="systemd"
 

srcpkgs/cinnamon-screensaver/update

@@ -0,0 +1,2 @@
+site="https://api.github.com/repos/linuxmint/$pkgname/tags"
+pattern='"name":\s*"\K[^\d]*([\d\.]+)(?=")'