build(deps): bump jetty.version (#409)

Bumps `jetty.version` from 9.4.24.v20191120 to 9.4.25.v20191220.

Updates `jetty-security` from 9.4.24.v20191120 to 9.4.25.v20191220
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.24.v20191120...jetty-9.4.25.v20191220)

Updates `jetty-webapp` from 9.4.24.v20191120 to 9.4.25.v20191220
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.24.v20191120...jetty-9.4.25.v20191220)

Updates `jetty-plus` from 9.4.24.v20191120 to 9.4.25.v20191220
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.24.v20191120...jetty-9.4.25.v20191220)

Updates `jetty-annotations` from 9.4.24.v20191120 to 9.4.25.v20191220
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.24.v20191120...jetty-9.4.25.v20191220)

Updates `apache-jsp` from 9.4.24.v20191120 to 9.4.25.v20191220
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.24.v20191120...jetty-9.4.25.v20191220)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

cas-client-integration-jetty/pom.xml

@@ -33,7 +33,7 @@
 
     <properties>
         <!-- Note Jetty 9.2.x is the last version to support Java SE 7 -->
-        <jetty.version>9.4.24.v20191120</jetty.version>
+        <jetty.version>9.4.25.v20191220</jetty.version>
     </properties>
 
     <dependencies>