build(deps): bump org.eclipse.jetty:jetty-maven-plugin (#2868)

Bumps org.eclipse.jetty:jetty-maven-plugin from 9.4.28.v20200408 to 11.0.20.

---
updated-dependencies:
- dependency-name: org.eclipse.jetty:jetty-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

model-view-viewmodel/pom.xml

@@ -36,7 +36,7 @@
   <version>1.26.0-SNAPSHOT</version>
   <properties>
     <zk.version>9.0.0</zk.version>
-    <jetty-maven-plugin.version>9.4.28.v20200408</jetty-maven-plugin.version>
+    <jetty-maven-plugin.version>11.0.20</jetty-maven-plugin.version>
     <maven-war-plugin.version>3.4.0</maven-war-plugin.version>
     <maven.build.timestamp.format>yyyy-MM-dd</maven.build.timestamp.format>
     <packname>-${project.version}-FL-${maven.build.timestamp}</packname>