update phpunit.xml.dist

Author: fenric

phpunit.xml.dist

@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<phpunit colors="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
     <coverage>
         <include>
             <directory>./src</directory>