Appdata.xml use the logo of the master branch

com.ultimaker.cura.appdata.xml

@@ -25,7 +25,7 @@
   </description>
   <screenshots>
     <screenshot type="default">
-      <image>https://raw.githubusercontent.com/Ultimaker/Cura/4.13.1/cura-logo.PNG</image>
+      <image>https://raw.githubusercontent.com/Ultimaker/Cura/master/cura-logo.PNG</image>
     </screenshot>
   </screenshots>
   <url type="homepage">https://ultimaker.com/software/ultimaker-cura?utm_source=cura&amp;utm_medium=software&amp;utm_campaign=cura-update-linux</url>