Update actions/checkout action to v5#18

renovate[bot] wants to merge 1 commit intomainphp-api-clients/openapi-client-utils:mainfrom

renovate/update-github-tags-actions-checkout-v5-0-0php-api-clients/openapi-client-utils:renovate/update-github-tags-actions-checkout-v5-0-0Copy head branch name to clipboard