Rise phpstan level to 10

Author: SenseException

phpstan.neon.dist

@@ -1,12 +1,15 @@
 parameters:
-    level: 9
+    level: 10
     paths:
         - "%currentWorkingDirectory%/src/"
         - "%currentWorkingDirectory%/tests/"
     ignoreErrors:
         -
             message: '#Call to an undefined method [a-zA-Z0-9\\_]+::children\(\)#'
             path: %currentWorkingDirectory%/src/DependencyInjection/Configuration.php
+        -
+            message: '#Cannot call method [a-zA-Z]+\(\) on mixed#'
+            path: %currentWorkingDirectory%/src/DependencyInjection/Configuration.php
 includes:
     - vendor/phpstan/phpstan-strict-rules/rules.neon
     - phar://phpstan.phar/conf/bleedingEdge.neon