#1472 - Upgrade dependencies
#1472 - Upgrade dependencies

- Mockito 2.28.2 -> 3.3.3
- AssertJ 3.14.0 -> 3.15.0
- Spring 5.2.4 -> 5.2.6
- Spring Boot -> 2.2.4 -> 2.2.6
- Spring Security 5.2.2 -> 5.2.3
- Wicket 8.6.1 -> 8.8.0
- Wicketstuff 8.6.0 -> 8.8.0
- Wicket Bootstrap 3.0.0-M13 -> 3.0.0-M15
- Wicket JQuery Selectors 2.0.8 -> 2.0.9
- Wicket Webjars 2.0.17 -> 2.0.18
- Log4J 2.12.1 -> 2.13.2
- JBoss Logging 3.3.1 -> 3.4.1
- Hibernate 5.4.10 -> 5.4.15
- Hibernate Validator 6.1.0 -> 6.1.4
- Batik 1.11 -> 1.12
- Jackson 2.10.2 -> 2.11.0
- Tomcat 9.0.33 -> 9.0.34

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