Release 0.12.0 preparation

[chalin]

Issues/PRs in scope

• External link checking + project pages #2120
  • Also see followup items in External link checking + project pages #2120
• Hide breadcrumb for docs index page #944
• Adapt to new template system in Hugo v0.146.0 #2243

Also see:

• milestone 24Q4
• milestone 25Q1
• milestone 25Q2

Release-prep checklist

For the complete instruction set, see Publishing a release:

• Update Changelog: for inspiration, go over changes since last release v0.11.0...main - Release 0.11.0 preparation #2101
• Update the Docsy version in package.json and userguide/hugo.yaml
• Test pre-release from branch: 👍🏻
• Pre-release patches?
• Create and push new version tag
• Create and publish the new release 🎉

Docsy example followup (tracked separately):

• Upgrade Docsy to version 0.12.0 docsy-example#368

Other / related

• Release 0.11.0 preparation #1944
• Release 0.13.0 preparation #2266
• v0.11.0...main