Change the Wicket version to use the version 9.5.0

[stefv]

I'm using wicket-spring-boot and pf4j-wicket. The application is refusing to start because it's mixing different versions of Wicket.

To use the last version of Wicket, I'm updating the different projects to Wicket 9.5.0.

[martin-g]

If you use Maven then you could use its <dependenciesManagement> to declare the preferred version of Wicket. This way the version of the transitive dependency, like pf4j-wicket, will be ignored. Just make sure all dependencies depend on the same major version of Wicket, i.e. 9.

I guess there is something similar in Gradle.

[decebals]

Or you can use exclusion when you declare pf4j-wicket dependency.

[decebals]

I don't know how many projects/users use this library (I am thinking to not disturb them with an update that contains an updated version of Wicket). @stefv You can propose a PR with an updated version of Wicket, after you test it.