chore: update security-code-scanner@main to action-security-code-scanner@v1

[metamaskbot]

Summary

This pull request changes the Security Code Scanner reference from metamask/security-code-scanner@main to metamask/action-security-code-scanner@v1. This change aligns with our versioned workflow approach and MetaMask naming conventions.

This is a non-breaking change that only affects the action reference name.

If you have any questions, please reach out to the MetaMask Security team.