Bundler found conflicting requirements for the Ruby version:
  In Gemfile:
    Ruby (~> 3.0.2.0)

    solidus_easypost was resolved to 2.0.0, which depends on
      Ruby (~> 2.5)

Bundler could not find compatible versions for gem "solidus":
  In Gemfile:
    solidus (~> 3.1)

    solidus_easypost was resolved to 1.0.2, which depends on
      solidus (~> 1.0.2)