- lock version to latest release of Antora 3.1
- rename properties on extension block
- use Node.js version provided by plugin
- remove package.json file
- assign environment variables using environments property on extension block
- use single quotes where possible in build script
- use default setting for log format
* remove unused workflows, scripts, and configuration (now handled by docs-build branch)
* upgrade Antora to 3.1 (and Node.js to 16)
* tune playbook settings
* reconfigure docs build for local build only
* add patch to support using linked worktree as Antora content source
* remove Antora extensions not needed for local builds
This makes it so that the URL contains security in the root of the deploy
folder. We will do this until we decide to add projects other than the
security related projects.
