Release v4.0.0

[huwd]

Release v4.0.0

Breaking

• Upgrade to govuk-frontend v5.6.0 and introduce new Javascript entry point
• BREAKING: drop support for IE8
• BREAKING: drop support for end-of-life Ruby versions 2.7 and 3.0. The minimum Ruby version is now 3.1.

You need to

• create a govuk_frontend.js file your project’s source/assets/javascripts directory
• add //= require govuk_frontend_all into it

Fixes

• Update gem dependencies.
• Declare some missing indirect dependencies to prepare for Ruby 3.4. This also resolves some warnings about this at build time.
• Remove aria-hidden from search label to let assistive technologies see its accessible name
• Use hidden attribute to show/hide expiry notices instead of just CSS
• Only use dialog role for table of contents when it behaves like one (accessibility fix)
• Prevent interactive elements being obscured by sticky table of contents header
• Only wrap images with alt text in hyperlinks

waiting on some fixes

[kr8n3r]

don't want the work on main. #375 replace this one