Enhancement: Use TimeKeeper and Collector\Collector instead of SlowTestCollector in Subscriber\TestPassedSubscriber

[localheinz]

This pull request

• uses TimeKeeper and Collector\Collector instead of SlowTestCollector in Subscriber\TestPassedSubscriber`

[codecov]

Codecov Report

Merging #26 (efe1215) into main (879305b) will not change coverage.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##                main       #26   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
- Complexity        38        39    +1     
===========================================
  Files             10        10           
  Lines            140       149    +9     
===========================================
+ Hits             140       149    +9     

Impacted Files	Coverage Δ	Complexity Δ
src/Subscriber/TestPassedSubscriber.php	100.00% <100.00%> (ø)	3.00 <1.00> (+1.00)
src/SlowTestCollector.php	100.00% <0.00%> (ø)	6.00% <0.00%> (ø%)

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