chore: update release version to v0.4.0 in metainfo.xml (#52)

Author: ruffsl

flatpak/io.github.ruffsl.ctrlassist.metainfo.xml

@@ -35,7 +35,7 @@
             </screenshot>
         </screenshots>
     <releases>
-        <release version="0.2.0" date="2025-12-20" />
+        <release version="0.4.0" date="2026-01-13" />
     </releases>
     <icon type="stock">io.github.ruffsl.ctrlassist</icon>
     <categories>