GIT_SILENT Update Appstream for new release

(cherry picked from commit 3345f405)

org.kde.elisa.appdata.xml

@@ -160,10 +160,10 @@ SPDX-License-Identifier: CC0-1.0
   <project_group>KDE</project_group>
   <content_rating type="oars-1.0"/>
   <releases>
+    <release version="20.08.1" date="2020-09-03"/>
     <release version="20.08.0" date="2020-08-13"/>
     <release version="20.04.3" date="2020-07-09"/>
     <release version="20.04.2" date="2020-06-11"/>
-    <release version="20.04.1" date="2020-05-14"/>
   </releases>
   <custom>
     <value key="KDE::windows_store">https://www.microsoft.com/p/elisa/9pb5md7zh8tl</value>