Update release history in Linux AppData file

Author: CubikingChill

buildscripts/packaging/Linux+BSD/org.musescore.MuseScore.appdata.xml.in

@@ -116,6 +116,15 @@
     </kudos>
     <!-- Only <releases> below this point please! -->
     <releases>
+        <release date="2025-12-18" version="4.6.5">
+            <url>https://musescore.org/en/4.6.5</url>
+        </release>
+        <release date="2025-12-01" version="4.6.4">
+            <url>https://musescore.org/en/4.6.4</url>
+        </release>
+        <release date="2025-10-22" version="4.6.3">
+            <url>https://musescore.org/en/4.6.3</url>
+        </release>
         <release date="2025-10-10" version="4.6.2">
             <url>https://musescore.org/en/4.6.2</url>
         </release>