Add coverage to php to be able to run infection tests.

Author: Otto Karl

.github/workflows/ci.yml

@@ -60,6 +60,8 @@ jobs:
         with:
           php-version: ${{ env.PHP_VERSION }}
           extensions: curl, dom, gd, iconv, intl, json, libxml, mbstring, mysqli, pcntl, pdo_mysql, phar, tokenizer, xdebug, xml, xmlwriter, xsl, zip
+          coverage: xdebug
+
 
       - name: Get Composer Cache Directory
         id: composer-cache