Drop Laravel 8.x & 9.x support

[dmason30]

• Drop Laravel 8.x & 9.x support
• Drop PHP 8.0 & 8.1 support
• Upgrade to PHPUnit 11.x

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (0bf4445) to head (fd3e4b9).
Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##                main        #9   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity        18        18           
===========================================
  Files              2         2           
  Lines             38        38           
===========================================
  Hits              38        38           

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