Update README.md

[phil-davis]

Trigger CI to see a current run of the GitHub workflows.

[codecov]

Codecov Report

Merging #99 (82c9c3f) into master (f6f0fc5) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #99   +/-   ##
=======================================
  Coverage   97.72%   97.72%           
=======================================
  Files           1        1           
  Lines         176      176           
=======================================
  Hits          172      172           
  Misses          4        4           

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[phil-davis]

https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/releases/tag/v3.21.1 says "Require PHP ^8.0.1" so I thought that to get cs-fixer releases after that to run in CI, we would have to use PHP 8.*

But the workflow here has fetched the up-to-date cs-fixer 3.23.0 and has run that in CI with PHP 7.4 - so they did not actually drop PHP 7.4 support. That's what I wanted to check.