Support php 8.4

[micheleorselli]

• added php 8.4 to the build matrix
• do static checks only on php 7.4 to avoid random results
• upgraded PHP Parser to version 5 to be able to parse php 8.4 code
• added a test to verify php 8.4 can be parsed
• updated our custom NameResolver (ugly, we should find a way to avoid that 😅)

[codecov]

Codecov Report

Attention: Patch coverage is 64.28571% with 5 lines in your changes missing coverage. Please review.

Project coverage is 93.85%. Comparing base (cda58ca) to head (a8725ca).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/Analyzer/NameResolver.php	61.53%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #447      +/-   ##
============================================
- Coverage     94.15%   93.85%   -0.30%     
- Complexity      588      591       +3     
============================================
  Files            69       69              
  Lines          1590     1594       +4     
============================================
- Hits           1497     1496       -1     
- Misses           93       98       +5     

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