Fixed namespace location

Author: sebprt

phpunit.xml

@@ -2,7 +2,7 @@
 <!-- https://phpunit.de/manual/current/en/appendixes.configuration.html -->
 <phpunit
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.1/phpunit.xsd"
+        xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.0/phpunit.xsd"
         backupGlobals="true" colors="false"
         processIsolation="false"
         stopOnError="false"