Add support for PHP 8.6

[MauricioFauth]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.38%. Comparing base (f9ff58e) to head (636b9b2).

Additional details and impacted files

@@            Coverage Diff            @@
##              5.4.x      #64   +/-   ##
=========================================
  Coverage     99.38%   99.38%           
  Complexity      112      112           
=========================================
  Files             8        8           
  Lines           326      326           
=========================================
  Hits            324      324           
  Misses            2        2           

Flag	Coverage Δ
unit-7.2	95.28% <ø> (?)
unit-7.2-ubuntu-latest	?
unit-7.3	99.38% <ø> (?)
unit-7.3-ubuntu-latest	?
unit-7.4	99.38% <ø> (?)
unit-7.4-ubuntu-latest	?
unit-8.0	99.38% <ø> (?)
unit-8.0-ubuntu-latest	?

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