Bump version to v6.2.0

[olleolleolle]

This is part of releasing.

• Add the CHANGELOG notes
• Bump the minor, since we added a feature

[olleolleolle]

Test failure is the same as this reported issue in that project: typhoeus/typhoeus#705

We get fails on 2.6, 2.7, 3.0, 3.1:

• 1.1.2
• 1.4.0

       -:headers => (include {"Content-Length" => "18"}),
       +:headers => #<Typhoeus::Response::Header({"Connection"=>"Keep-Alive", "Content-Length"=>"18", "Content-Type"=>"text/html;charset=utf-8", "Date"=>"Sat, 19 Nov 2022 14:45:34 GMT", "Server"=>"WEBrick/1.7.0 (Ruby/2.7.1/2020-03-31)"})>,

[olleolleolle]

@ryanseys 👋 While attempting to make a release, I ran into Ruby ecology issues that now affect the unchanged Typh***s library. Report above is about this.

[olleolleolle]

When done, I ran SKIP_RELISH=true bundle exec rake release and then pressed Publish on a prepared GitHub Release.