Upgrade Wicket version (#102)

Is a drop in replacement according to https://wicket.apache.org/news/2025/01/24/wicket-10.4.0-released.html#upgrading-from-earlier-versions

Fixes #100

Reviewed-on: #102
Reviewed-by: Nico Athanassiadis <nico@dsv.su.se>
Co-authored-by: Andreas Svanberg <andreass@dsv.su.se>
Co-committed-by: Andreas Svanberg <andreass@dsv.su.se>

pom.xml

@@ -24,7 +24,7 @@
         <!-- Dependency versions -->
         <slf4j.version>2.0.7</slf4j.version>
         <log4j2.version>2.20.0</log4j2.version>
-        <wicket.version>10.1.0</wicket.version>
+        <wicket.version>10.4.0</wicket.version>
 
         <!-- See https://hibernate.org/orm/releases/ for which version Hibernate implements -->
         <jakarta.persistence-api.version>3.1.0</jakarta.persistence-api.version>