Fix: Use Xdebug instead of pcov for collecting code coverage

[localheinz]

This pull request

• uses Xdebug instead of pcov for collecting code coverage

[codecov]

Codecov Report

Merging #417 (1a917c6) into main (90a7e5c) will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff             @@
##                main      #417   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity        20        20           
===========================================
  Files              1         1           
  Lines             50        53    +3     
===========================================
+ Hits              50        53    +3     

Impacted Files	Coverage Δ
src/Printer.php	100.00% <0.00%> (ø)

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