Update phpunit.xml

Author: TheDevick

.phpunit.result.cache

@@ -1,7 +1,8 @@
 <phpunit
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/8.1/phpunit.xsd"
-        colors="true">
+        colors="true"
+        cacheResult ="false">
     <testsuites>
         <testsuite name="MySql">
             <directory>tests</directory>