chore(deps): update dependency actions/checkout to v6.0.1#16

chrisbbreuer wants to merge 6 commits intomainstacksjs/ts-medium-editor:mainfrom

buddy-bot/update-major-update---actions/checkout-1759492984525stacksjs/ts-medium-editor:buddy-bot/update-major-update---actions/checkout-1759492984525Copy head branch name to clipboard