Fix dependency in iptables part 2

BUG=b/384555763
TEST=presubmit
RELEASE_NOTE=None

Change-Id: Ib70523cda023a6c02c256eae436a34edc45b8b3b
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/portage-stable/+/89340
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Nandhini Rengaraj <nrengaraj@google.com>