Update VirtualXT git url

Author: BinBashBanana

rules.d/core-rules.sh

@@ -1646,8 +1646,8 @@ include_core_virtualxt() {
 	register_module core "virtualxt"
 }
 libretro_virtualxt_name="VirtualXT"
-libretro_virtualxt_git_url="https://github.com/andreas-jonsson/virtualxt.git"
-libretro_virtualxt_post_fetch_cmd="git checkout release"
+libretro_virtualxt_git_url="https://codeberg.org/virtualxt/virtualxt.git"
+libretro_virtualxt_post_fetch_cmd="git checkout edge"
 libretro_virtualxt_build_subdir="tools/package/libretro"
 
 include_core_puzzlescript() {