chore: add PHP 8.4

[miaulalala]

Let's see if things go 💥

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 23.56%. Comparing base (13545a6) to head (d2f156c).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #6434   +/-   ##
=========================================
  Coverage     23.56%   23.56%           
  Complexity      454      454           
=========================================
  Files           247      247           
  Lines         11693    11693           
  Branches       2205     2194   -11     
=========================================
  Hits           2755     2755           
  Misses         8618     8618           
  Partials        320      320           

Flag	Coverage Δ
javascript	15.08% <ø> (ø)
php	59.53% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.