fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-COMMONSCODEC-561518
- https://snyk.io/vuln/SNYK-JAVA-COMMONSIO-1277109
- https://snyk.io/vuln/SNYK-JAVA-IONETTY-30430
- https://snyk.io/vuln/SNYK-JAVA-IONETTY-473694
- https://snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEHTMLUNIT-3252500
- https://snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEHTMLUNIT-548471
- https://snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEHTMLUNIT-5603110
- https://snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGENEKOHTML-2621454
- https://snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGENEKOHTML-2774754
- https://snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGENEKOHTML-2803036
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHEHTTPCOMPONENTS-1048058
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHEHTTPCOMPONENTS-31517
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-1090340
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-174479
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-32151
- https://snyk.io/vuln/SNYK-JAVA-XALAN-2953385
- https://snyk.io/vuln/SNYK-JAVA-XERCES-2359991
- https://snyk.io/vuln/SNYK-JAVA-XERCES-30183
- https://snyk.io/vuln/SNYK-JAVA-XERCES-31585
- https://snyk.io/vuln/SNYK-JAVA-XERCES-5920442
- https://snyk.io/vuln/SNYK-JAVA-XERCES-608891

pom.xml

@@ -82,7 +82,7 @@
         <maven-plugin.gitflow.version>1.20.0</maven-plugin.gitflow.version>
 
         <!-- Dependencies versions -->
-        <zap-java.version>0.3.1</zap-java.version>
+        <zap-java.version>0.4.0</zap-java.version>
         <jdom.version>1.1.1</jdom.version>
         <selenium.version>2.49.1</selenium.version>
         <phantomjsdriver.version>1.2.0</phantomjsdriver.version>