Update build.yml

Author: ryuuzaki42

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Get appimagetool
       run: |
         set -x
-        wget https://github.com/AppImage/AppImageKit/releases/download/13/appimagetool-x86_64.AppImage
+        wget https://github.com/AppImage/appimagetool/releases/download/continuous/appimagetool-x86_64.AppImage
         chmod +x appimagetool-x86_64.AppImage
         ls -lah