Update tuxscape.appdata.xml

Author: mrbid

flatpak/tuxscape.appdata.xml

@@ -25,7 +25,7 @@
 	</screenshots>
 	<url type="homepage">https://mrbid.github.io/tuxscape/</url>
 	<releases>
-		<release version="1.2" date="2023-12-15" />
+		<release version="1.2.1" date="2023-12-15" />
 	</releases>
 	<content_rating type="oars-1.0" />
 </application>