Fix: Run end-to-end and phar tests with phpunit/phpunit:8.5.40

[localheinz]

This pull request

• runs end-to-end and phar tests with phpunit/phpunit:8.5.40

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.10%. Comparing base (7091fd3) to head (8a7e980).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #655   +/-   ##
=========================================
  Coverage     56.10%   56.10%           
  Complexity      116      116           
=========================================
  Files            28       28           
  Lines           672      672           
=========================================
  Hits            377      377           
  Misses          295      295           

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