feat: add support for PHP 8.4

[yt-topicus]

Fixes #104

[yt-topicus]

@neilime Would you have some time to take a look at the PR and provide feedback if necessary?

[neilime]

@yt-topicus I want to give a chance at PHP_CS_FIXER to support PHP 8.4 before adding a workaround.
I'm waiting still 2 weeks.

[yt-topicus]

@yt-topicus I want to give a chance at PHP_CS_FIXER to support PHP 8.4 before adding a workaround. I'm waiting still 2 weeks.

Okay that's understandable 👍

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.38%. Comparing base (2761c45) to head (9b61e4a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #105   +/-   ##
=========================================
  Coverage     95.38%   95.38%           
  Complexity      209      209           
=========================================
  Files            11       11           
  Lines           520      520           
=========================================
  Hits            496      496           
  Misses           24       24           

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