Update flathub metainfo with new release tag

Author: dimkanovikov

build/linux/flathub/share/metainfo/dev.storyapps.starc.metainfo.xml

@@ -116,6 +116,7 @@
         </screenshot>
     </screenshots>
     <releases>
+        <release version="0.8.1" date="2026-02-03"/>
         <release version="0.8.0" date="2025-12-09"/>
         <release version="0.7.8" date="2025-07-15"/>
         <release version="0.7.7" date="2025-02-07"/>