chore(deps): update actions/checkout action to v6#360

jan-molak merged 1 commit intomainserenity-js/serenity-js-playwright-ct-react-template:mainfrom

renovate/actions-checkout-6.xserenity-js/serenity-js-playwright-ct-react-template:renovate/actions-checkout-6.xCopy head branch name to clipboard