[xdg_data] Update release date

Author: eumagga0x2a

avidemux/qt4/xdg_data/org.avidemux.Avidemux.appdata.xml.in

@@ -29,6 +29,6 @@
     </screenshots>
     <content_rating type="oars-1.1"/>
     <releases>
-        <release version="${AVIDEMUX_VERSION}" date="2021-12-22"/>
+        <release version="${AVIDEMUX_VERSION}" date="2021-12-24"/>
     </releases>
 </component>