#3470 snap: add missing libqt6quick6 in Qt6 build

Signed-off-by: Patrizio Bekerle <patrizio@bekerle.com>

Author: pbek

build-systems/github/snap.qt6/snapcraft.yaml

@@ -82,6 +82,7 @@ parts:
       - libqt6sql6-sqlite
       - libqt6widgets6t64
       - libqt6qml6
+      - libqt6quick6
       - libqt6network6t64
       - libqt6xml6t64
       - libqt6printsupport6t64