* Ruby 3.3.5 + Rails 7.2.1.1

* enums

* circleci: ruby 3.3.5

* set test adapter for test jobs

* remove useless files + added slugignore

* add .scalingo folder to slugignore

* specify node and yarn folders inside .scalingo

* need to keep node for execjs (used by autoprefixer for bootstrap)

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Co-authored-by: Arnaud Levy <arnaud.levy@noesya.coop>