GitHub Actions: Avoid shipping debug information in AppImage

Debug information was getting installed after using the convenience
install properties in 46c4474. However,
we do not want to include these files in the AppImage since they make it
very big.

.github/workflows/packages.yml

@@ -124,6 +124,8 @@ jobs:
         export EXTRA_QT_PLUGINS=svg
         export LD_LIBRARY_PATH=/opt/Qt/${QT_VERSION}/gcc_64/lib:$PWD/AppDir/usr/lib
         export OUTPUT=Tiled-Qt${{ matrix.qt_version_major }}-x86_64.AppImage
+        # Avoid shipping the debug information
+        find AppDir -name \*.debug -delete
         ./linuxdeploy-x86_64.AppImage --appdir AppDir --custom-apprun=dist/linux/AppRun --exclude-library "*libpython3*" --plugin qt
         # We don't need the bearer plugins (needed for Qt 5 only)
         rm -rfv AppDir/usr/plugins/bearer