Bump jetty-server from 9.3.4.RC0 to 9.3.27.v20190418 in /tests/android (#422)

Bumps [jetty-server](https://github.com/eclipse/jetty.project) from 9.3.4.RC0 to 9.3.27.v20190418.
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](jetty/jetty.project@jetty-9.3.4.RC0...jetty-9.3.27.v20190418)

---
updated-dependencies:
- dependency-name: org.eclipse.jetty:jetty-server
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

tests/android/pom.xml

@@ -73,7 +73,7 @@
         <dependency>
             <groupId>org.eclipse.jetty</groupId>
             <artifactId>jetty-server</artifactId>
-            <version>9.3.4.RC0</version>
+            <version>9.3.27.v20190418</version>
             <scope>test</scope>
         </dependency>
         <dependency>