Fix version-info.xml

Forgot to add a changelog entry for DMG's return.
The new version number is now 12.9.1.

version-info.xml

 <version-info>
-    <current version="12.8.3" />
+    <current version="12.9.1" />
     <changelog>
-        <version number="12.8.3" timestamp="1558448014461">Target line and posing updates for Meia.</version>
+        <version number="12.9.1" timestamp="1558448014461">Target line and posing updates for Meia.</version>
+        <version number="12.9.0" timestamp="1558444172000">Updates and re-adds Dark Magician Girl to Testing!</version>
         <version number="12.8.2" timestamp="1558374824773">Posing tweaks for Meia.</version>
         <version number="12.8.1" timestamp="1558370233733">Dialogue update to Lucina.</version>
         <version number="12.8.0" timestamp="1558317800071">Added offline character dev mode, as well as minor updates to Estelle, Saki, HK416, and Chihiro.</version>
@@ -114,4 +115,4 @@
         <version number="11.63" timestamp="1530163200000">Faye has joined the game!</version>
         <version number="11.62" timestamp="1529638740000">Velma and Amalia have returned to the game!</version>
     </changelog>
-</version-info>
\ No newline at end of file
+</version-info>