Remove phpdbg from coverage target

[ohmyfelix]

Summary

Replace the Makefile coverage target to run Nette Tester with php instead of phpdbg.

Motivation

This repository is part of contributte/contributte#73, which removes phpdbg from coverage targets across Contributte projects.

Changes

• replace -p phpdbg with -p php in the coverage target of Makefile

Testing

• make coverage was attempted locally
• Coverage passes locally
• CI passes

Local make coverage currently fails because the environment does not have Xdebug or PCOV enabled, so php cannot collect coverage without an installed coverage driver.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (master@0a00a1b). Learn more about missing BASE report.

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #971   +/-   ##
=========================================
  Coverage          ?   11.90%           
=========================================
  Files             ?        3           
  Lines             ?       42           
  Branches          ?        0           
=========================================
  Hits              ?        5           
  Misses            ?       37           
  Partials          ?        0           

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