Update fake ant dependency to 1.9.4

Change-Id: Ie82bcc476d1cf766c9201a5348c9232336e9efbc
Signed-off-by: Mat Booth <mat.booth@redhat.com>
Reviewed-on: https://git.eclipse.org/r/37359
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
Tested-by: Alexander Kurtakov <akurtako@redhat.com>