feat(validate-k8s-manifests): added optional strict flag, updated kubeconform version#111

dlactin merged 1 commit intomainmozilla-it/deploy-actions:mainfrom

MZCLD-1278-support-strict-kubeconformmozilla-it/deploy-actions:MZCLD-1278-support-strict-kubeconformCopy head branch name to clipboard