Dependency issues with rails 5.2.0 on bundle install

Created by: frostini

Expected: Should be able to add administrate gem to Rails 5.2.0 project.

Actual Error resolving dependencies and could not run bundle install.

Steps to Reproduce

1. Add administrate gem to a 5.2.0 rails app Gemfile via gem 'administrate', '~> 0.9.0'
2. run bundle install in console

Error Message

Bundler could not find compatible versions for gem "actionpack":
  In Gemfile:
    administrate (~> 0.9.0) was resolved to 0.9.0, which depends on
      actionpack (< 5.2, >= 4.2)

    rails (= 5.2.0) was resolved to 5.2.0, which depends on
      actionpack (= 5.2.0)

Suggested fix Set actionpack dependency to actionpack (~> 5.2.0, >= 4.2)

Isolated Issue I added administrate gem to a 5.1.6 rails app and dependencies were resolved and bundle install ran successfully

PS. Thank you for being awesome and all the work you do thoughtbot team :) !