grails: update livecheck

Author: BrewTestBot

Formula/g/grails.rb

@@ -7,8 +7,7 @@ class Grails < Formula
 
   livecheck do
     url :stable
-    regex(/^v?(\d+(?:\.\d+)+)$/i)
-    strategy :github_releases
+    strategy :github_latest
   end
 
   bottle do