Update nightly flatpaks for 4.20 I-builds Change-Id: Ifd85ec0407be9b0a90f1f2545cd5506205507baa Signed-off-by: Mat Booth <mat.booth@redhat.com> Reviewed-on: https://git.eclipse.org/r/c/linuxtools/org.eclipse.linuxtools.eclipse-build/+/177363