Fix issue 123266 > CI: `post-kubernetes-push-e2e-agnhost-test-images` is failing > (`gcr.io/k8s-staging-e2e-test-images/agnhost:2.46-linux-amd64 is a manifest list`) To avoid creating a manifest list with the recent version of buildx, `--provenance=false --sbom=false` has to be specified. Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>