ci: add verfy php 8.4

[realFlowControl]

Description

This adds the missing verify checks for PHP 8.4.
Relates to #2984

Reviewer checklist

• Test coverage seems ok.
• Appropriate labels assigned.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.90%. Comparing base (b0da77f) to head (7c44214).

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #2987   +/-   ##
=========================================
  Coverage     72.90%   72.90%           
  Complexity     2741     2741           
=========================================
  Files           137      137           
  Lines         14978    14978           
  Branches       1016     1016           
=========================================
  Hits          10920    10920           
  Misses         3506     3506           
  Partials        552      552           

Flag	Coverage Δ
appsec-extension	67.84% <ø> (ø)
tracer-php	74.82% <ø> (ø)

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