ci: update PHP 8.4 to rc4

[realFlowControl]

Description

PHP 8.4 RC4 got released, this updates docker images to the latest rc

PROF-10137

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 82.10%. Comparing base (68f8558) to head (b3b784f).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #2938   +/-   ##
=========================================
  Coverage     82.10%   82.10%           
  Complexity     2527     2527           
=========================================
  Files           108      108           
  Lines         10360    10360           
=========================================
  Hits           8506     8506           
  Misses         1854     1854           

Flag	Coverage Δ
tracer-php	82.10% <ø> (ø)

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[realFlowControl]

All PHP 8.4 images have already been rebuild on PHP 8.4 RC4