Resolve PHP 8.4 deprecations

[roxblnfk]

What was changed

• Code style preset updated
• Fixed nullable parameters

Why?

To prevent deprecations messages

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 21.91%. Comparing base (df2ccbb) to head (96bb893).
Report is 5 commits behind head on master.

Files with missing lines	Patch %	Lines
src/Client/TrapHandle/Dumper.php	0.00%	1 Missing ⚠️
src/Handler/Http/Middleware/Resources.php	0.00%	1 Missing ⚠️
src/Sender/Frontend/Http/StaticFiles.php	0.00%	1 Missing ⚠️
src/Socket/Server.php	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #143      +/-   ##
============================================
- Coverage     22.56%   21.91%   -0.66%     
  Complexity     1333     1333              
============================================
  Files           157      157              
  Lines          4188     4294     +106     
============================================
- Hits            945      941       -4     
- Misses         3243     3353     +110     

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