What we should change and why (this is tech debt)

The next Rails version has been released. There are some performance optimisations which would be nice to have and some new tools we can explore. But there are several steps we need to take first:

• Wait for all our dependencies to be compatible with Rails 7.1.
• Rails 6.1 Deprecation warnings #7853
• Address any other existing deprecation warnings.
• Follow the upgrade guide.

Context

Impact and timeline

Not critical at the moment. But good to chip away at this issue.