title: Rails Console - Deprecation Notices After Updating Gems
body: <p>I ran <code>bundler update</code> on my rails 6 project and now see the following deprecation notice when I run <code>rails console</code>. Anyone know off hand which is the offending combo of incompatible gem/ruby version?</p>
  <p>Deprecation Notice:</p>
  <pre><code>root@1ddbacaf4a69:/app# bin/rails c
  Top level ::CompositeIO is deprecated, require 'multipart/post' and use `Multipart::Post::CompositeReadIO` instead!
  Top level ::Parts is deprecated, require 'multipart/post' and use `Multipart::Post::Parts` instead!
  </code></pre>
  <p>Ruby version: 3.1.2</p>
  <p>Google and github has not been too much help. I don't want to start disabling gems one at a time to figure it out.</p>