Fix: Use Xdebug instead of pcov for collecting code coverage

.github/CONTRIBUTING.md

@@ -51,7 +51,7 @@ to run a dependency analysis.
 
 We are using [`infection/infection`](https://github.com/infection/infection) to ensure a minimum quality of the tests.
 
-Enable `pcov` or `Xdebug` and run
+Enable `Xdebug` and run
 
 ```sh
 $ make mutation-tests

.github/workflows/integrate.yaml

@@ -32,7 +32,7 @@ jobs:
       - name: "Set up PHP"
         uses: "shivammathur/[email protected]"
         with:
-          coverage: "pcov"
+          coverage: "xdebug"
           extensions: "${{ env.PHP_EXTENSIONS }}"
           php-version: "${{ matrix.php-version }}"
 
@@ -54,7 +54,7 @@ jobs:
         with:
           dependencies: "${{ matrix.dependencies }}"
 
-      - name: "Collect code coverage with pcov and phpunit/phpunit"
+      - name: "Collect code coverage with Xdebug and phpunit/phpunit"
         run: "vendor/bin/phpunit --configuration=test/Unit/phpunit.xml --coverage-clover=.build/phpunit/logs/clover.xml"
 
       - name: "Send code coverage report to Codecov.io"
@@ -189,7 +189,7 @@ jobs:
       - name: "Set up PHP"
         uses: "shivammathur/[email protected]"
         with:
-          coverage: "pcov"
+          coverage: "xdebug"
           extensions: "${{ env.PHP_EXTENSIONS }}"
           php-version: "${{ matrix.php-version }}"
 
@@ -208,7 +208,7 @@ jobs:
         with:
           dependencies: "${{ matrix.dependencies }}"
 
-      - name: "Run mutation tests with pcov and infection/infection"
+      - name: "Run mutation tests with Xdebug and infection/infection"
         run: "vendor/bin/infection --configuration=infection.json"
 
   static-code-analysis: