Change dependency version to one without vulnerabilities.

Author: jmrozanec

pom.xml

@@ -117,7 +117,7 @@
         <dependency>
             <groupId>org.hibernate</groupId>
             <artifactId>hibernate-validator</artifactId>
-            <version>5.2.4.Final</version>
+            <version>6.1.2.Final</version>
             <scope>test</scope>
         </dependency>
         <dependency>