chore: mark as compatible with rails 7.1

[Roguelazer]

Tested locally and it seems to work with no other changes

I had to convert the Dockerfile to use Debian-based images instead of Alpine because current versions of nokogiri include binaries in them that link against glibc and fail to run when ruby is linked against musl libc.

[nicho1991]

LGTM 🎉

[elalemanyo]

Hi, I have tested it in an application using kaminari and I get this error: StackLevelTooDeep, am I the only one? 😬

[scott-knight]

@elalemanyo switch to Pagy for pagination, you'll be much happier

[dejan]

Thanks. Will be done by relaxing Rails version constraint: https://github.com/dejan/rails_panel/pull/197