Update PKG_SOURCE_VERSION to f60e50e887d3c49e91ac9b06d8199b36152632fa
to pick up upstream fixes accumulated since the 2024-11-06 snapshot.
Add libgst1gl to runtime DEPENDS - upstream now uses GstGL helpers.
kmscube has no tagged releases; track upstream master.
Link: https://gitlab.freedesktop.org/mesa/kmscube/-/commits/master
Signed-off-by: Daniel Golle <daniel@makrotopia.org>