[SC-18631] Present the PDF size limit as guidance across the PDF guides - #1542

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, dorny/paths-filter@v2. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

'ref' input parameter is ignored when 'base' is set to HEAD