docs(readme): Update CodeCov badge on README.md

[mwbrooks]

Summary

This pull request updates the token used by the codecov badge, so that it displays the correct code coverage report. It also reorders the badges to be: Tests, CodeCov, and then CircleCI

Reviewers

• Preview of README.md

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.83%. Comparing base (afa0d27) to head (1fd5243).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #2      +/-   ##
==========================================
+ Coverage   62.81%   62.83%   +0.02%     
==========================================
  Files         210      210              
  Lines       22053    22053              
==========================================
+ Hits        13853    13858       +5     
+ Misses       7122     7120       -2     
+ Partials     1078     1075       -3     

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[zimeg]

LGTM and thanks once more for ordering and organizing these badges. A landing page can be more important than I'd thought 🎁

Approving now because this URL is working for me - the commit specific one doesn't? - but I'm hopeful main will work alright:

https://github.com/slackapi/slack-cli/blob/mbrooks-update-readme-codecov/README.md

👾

[zimeg]

👁️‍🗨️ Great catch with this updated token!

I hope this might be removed altogether in a future PR, but for now I'm finding this returns coverage reports 🤖 ✨

[zimeg]

Edit: It might've been a caching thing! The URL you shared is loading for me now 😉