fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-COMMONSFILEUPLOAD-10363252

Author: snyk-bot

pom.xml

@@ -33,7 +33,7 @@
         </license>
     </licenses>
     <properties>
-        <wicket.version>8.0.0</wicket.version>
+        <wicket.version>10.0.0</wicket.version>
         <jetty9.version>9.2.24.v20180105</jetty9.version>
         <log4j.version>2.6.2</log4j.version>
         <junit.version>4.12</junit.version>