cq_deps: Add option to ignore errors Change-Id: Iba010d467f8cde9d91916cecdac65f3d5f6c7ab9 Reviewed-on: https://pigweed-review.googlesource.com/c/infra/recipes/+/53662 Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com> Pigweed-Auto-Submit: Rob Mohr <mohrr@google.com> Reviewed-by: Anthony Fandrianto <atyfto@google.com>