Github action 20.04 runner EOL

[UserNotFound]

LoadError: cannot load such file -- base64 (LoadError)
base64 was loaded from the standard library, but will no longer be part of the default gems since Ruby 3.4.0. Add
base64 to your Gemfile or gemspecw

Fixed that ^ , but i think we also are doing something OpenSSL considers implicitly "wrong", but i don't immediately grok why we're doing exactly what they say you cant?

1) MiniCa::Certificate#initialize initializes with a custom private_key (ECDSA)
     Failure/Error: pub.public_key = private_key.public_key

     OpenSSL::PKey::PKeyError:
       pkeys are immutable on OpenSSL 3.0
     # ./lib/mini_ca/certificate.rb:139:in `public_key='
     # ./lib/mini_ca/certificate.rb:139:in `public_key'
     # ./lib/mini_ca/certificate.rb:31:in `initialize'
     # ./spec/mini_ca/certificate_spec.rb:74:in `new'
     # ./spec/mini_ca/certificate_spec.rb:74:in `block (3 levels) in <top (required)>'
     ```

[UserNotFound]

https://app.shortcut.com/aptible/story/31601/gha-to-24-04-attempt-naive-update-for-all-repos

[UserNotFound]

https://app.shortcut.com/aptible/story/31602/gha-to-24-04-handle-complications