Build a Ruby 3.2.3/bookworm image

[sulami]

The base images in question are

• https://hub.docker.com/layers/library/ruby/3.2.3-bookworm/images/sha256-5590025acebb13cacd5a5a4e5b0733c18d841318b8b788996bb88ce1fc64c565
• https://hub.docker.com/layers/library/ruby/3.2.3-slim-bookworm/images/sha256-7bd0053d5820b233c060775c8fe21d25a9f3ee1ae4fb04bc8fe7887f9c44a2f3

This should get us onto OpenSSL 3, which is the point of this, as well as pick up a slightly newer Ruby version.

[sulami]

I've used this image to run a hats review app and confirmed that we don't have the GPayments issue anymore, my payment went through just fine.