fix: Specify that the date format for a calendar is for display only · javalent/calendarium@376aa5a

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: google-github-actions/release-please-action@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.