bumping commons-validator, fixing #447

Author: Bence Erős

core/pom.xml

@@ -236,7 +236,7 @@
         <dependency>
             <groupId>commons-validator</groupId>
             <artifactId>commons-validator</artifactId>
-            <version>1.6</version>
+            <version>1.7</version>
             <exclusions>
                 <exclusion>
                     <artifactId>commons-beanutils</artifactId>