ci: upgrade actions/checkout to version 5#1621

brotkrueml wants to merge 1 commit intoTYPO3-Documentation:mainTYPO3-Documentation/TYPO3CMS-Reference-Typoscript:mainfrom

brotkrueml:actions-checkout-5brotkrueml/TYPO3CMS-Reference-Typoscript:actions-checkout-5Copy head branch name to clipboard