Issues in scope

• Multilanguage menu is misaligned on tablet-sized displays #1559
• [BSv5] Replace media styles with flex equivalents #1560

Release checklist

• Update Changelog
• Prepare hugo modules
  • Update package.json
• Update the Docsy version in userguide/hugo.yaml
• Create and test new tags
• Create and publish the new release 🎉

Docsy example followup (tracked separately):

• Upgrade Docsy to 0.7.1 docsy-example#230

Previous release:

• Prepare and release Docsy 0.7.0 #1540