Security Policy violation SECURITY.md

_This issue was automatically created by [Allstar](https://github.com/ossf/allstar/)._

**Security Policy Violation**
Security policy not enabled.
A SECURITY.md file can give users information about what constitutes a vulnerability and how to report one securely so that information about a bug is not publicly visible. Examples of secure reporting methods include using an issue tracker with private issue support, or encrypted email with a published key.

To fix this, add a SECURITY.md file that explains how to handle vulnerabilities found in your repository. Go to https://github.com/GoogleContainerTools/container-structure-test/security/policy to enable.

For more information, see https://docs.github.com/en/code-security/getting-started/adding-a-security-policy-to-your-repository.

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This issue will auto resolve when the policy is in compliance.

Issue created by Allstar. See https://github.com/ossf/allstar/ for more information. For questions specific to the repository, please contact the owner or maintainer.