Update application icons

snap/snapcraft.yaml

@@ -125,7 +125,7 @@ parts:
       set -eu
       snapcraftctl prime
       # Fix-up application icon lookup
-      sed --in-place 's|^Icon=.*|Icon=${SNAP}/share/icons/hicolor/256x256/apps/solarus.png|' share/applications/solarus.desktop
+      sed --in-place 's|^Icon=.*|Icon=${SNAP}/share/icons/hicolor/512x512/apps/solarus.png|' share/applications/solarus.desktop
   quest-editor:
     plugin: cmake
     source-type: git
@@ -194,7 +194,7 @@ parts:
       set -eu
       snapcraftctl prime
       # Fix-up application icon lookup
-      sed --in-place 's|^Icon=.*|Icon=${SNAP}/share/icons/hicolor/256x256/apps/solarus-quest-editor.png|' share/applications/solarus-quest-editor.desktop
+      sed --in-place 's|^Icon=.*|Icon=${SNAP}/share/icons/hicolor/scalable/apps/solarus-quest-editor.svg|' share/applications/solarus-quest-editor.desktop
       # Move `assets` directory
       mv share/solarus-quest-editor/assets bin/assets
   desktop-qt5: