title: public_suffix requires Ruby version >= 2.3 while installing fastlane
body: <p>Getting following error <code>public_suffix requires Ruby version &gt;= 2.3.</code> while installing fastlane</p>
  <p>i am using ruby 3.0</p>
  <pre><code>ruby -v 
  ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-linux]
  </code></pre>
  <p>Installing fastlane</p>
  <pre><code>sudo gem install fastlane
  </code></pre>
  <p>getting below error</p>
  <pre><code>ERROR:  Error installing fastlane:
  public_suffix requires Ruby version &gt;= 2.3.
  </code></pre>