Rails upgrade

[vangberg]

Current status:

SeqCode is on Ruby 3.3.9 and Rails 6.1. The defaults loaded are still from Rails 5.1¹.

Upgrade plan

• Switch to Rails 6 defaults, including switching to Zeitwerk.
  • Enable Zeitwerk #268
• Upgrade to Rails 7.0
• Upgrade to Rails 7.1
• Upgrade to Rails 7.2
• Upgrade to Rails 8.0
• Upgrade to Rails 8.1

Footnotes

1. https://github.com/seq-code/registry/blob/main/config/application.rb#L12 ↩