easyrpg-player: update livecheck

The existing `livecheck` block for `easyrpg-player` is an old check
from years ago and there's no specific reason it's checking Git tags
other than it technically works. This updates the `livecheck` block
to check the first-party download page, which links to the `stable`
tarball.

Author: samford

Formula/e/easyrpg-player.rb

@@ -7,7 +7,8 @@ class EasyrpgPlayer < Formula
   revision 6
 
   livecheck do
-    url "https://github.com/EasyRPG/Player.git"
+    url "https://easyrpg.org/player/downloads/"
+    regex(/href=.*?easyrpg-player[._-]v?(\d+(?:\.\d+)+)\.t/i)
   end
 
   bottle do