Bump org.eclipse.jetty:jetty-server from 9.4.26.v20200117 to 11.0.14

Bumps [org.eclipse.jetty:jetty-server](https://github.com/eclipse/jetty.project) from 9.4.26.v20200117 to 11.0.14.
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](jetty/jetty.project@jetty-9.4.26.v20200117...jetty-11.0.14)

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

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

build.gradle

@@ -95,7 +95,7 @@ dependencies {
     testImplementation 'org.codehaus.groovy:groovy:3.0.17'
     testImplementation 'org.codehaus.groovy:groovy-json:3.0.17'
     testImplementation 'com.google.code.gson:gson:2.8.9'
-    testImplementation 'org.eclipse.jetty:jetty-server:9.4.26.v20200117'
+    testImplementation 'org.eclipse.jetty:jetty-server:11.0.14'
     testImplementation 'com.fasterxml.jackson.core:jackson-databind:2.14.2'
     testImplementation 'org.slf4j:slf4j-simple:' + slf4jVersion
     testImplementation 'org.awaitility:awaitility-groovy:4.2.0'