Remove printer class / use testdox by default in phpunit setup

phpunit.xml

@@ -9,8 +9,9 @@
     enforceTimeLimit="true"
     failOnWarning="true"
     forceCoversAnnotation="false"
-    printerClass="Codedungeon\PHPUnitPrettyResultPrinter\Printer" processIsolation="true"
+    processIsolation="true"
     stopOnError="true" stopOnFailure="true" stopOnIncomplete="true" stopOnSkipped="true" stopOnRisky="true"
+    testdox="true"
     timeoutForSmallTests="1" timeoutForMediumTests="10" timeoutForLargeTests="60"
     verbose="true">
 </phpunit>