Fix: Suggest and require phpunit/phpunit:^10.0.1 as development dependency

[localheinz]

This pull request

• suggests and requires phpunit/phpunit:^10.0.1 as development dependency

[codecov]

Codecov Report

Merging #272 (d194606) into main (6226d12) will not change coverage.
The diff coverage is n/a.

❗ Current head d194606 differs from pull request most recent head e400a4f. Consider uploading reports for the commit e400a4f to get more accurate results

@@            Coverage Diff            @@
##               main     #272   +/-   ##
=========================================
  Coverage     94.64%   94.64%           
  Complexity       61       61           
=========================================
  Files            15       15           
  Lines           299      299           
=========================================
  Hits            283      283           
  Misses           16       16           

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[alfredbez]

Just tested this, and it works perfectly in our setup 👍

[localheinz]

Thank you, @alfredbez!