Enhancement: Add support for PHP 8.5

[localheinz]

This pull request

• adds support for PHP 8.5

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.31%. Comparing base (a4960ce) to head (93c9833).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1555   +/-   ##
=========================================
  Coverage     99.31%   99.31%           
  Complexity      107      107           
=========================================
  Files            28       28           
  Lines           437      437           
=========================================
  Hits            434      434           
  Misses            3        3           

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