Bump org.eclipse.jetty:jetty-server from 11.0.19 to 11.0.20

Bumps org.eclipse.jetty:jetty-server from 11.0.19 to 11.0.20.

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

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

pom.xml

@@ -98,7 +98,7 @@
     <dependency>
       <groupId>org.eclipse.jetty</groupId>
       <artifactId>jetty-server</artifactId>
-      <version>11.0.19</version>
+      <version>11.0.20</version>
       <scope>test</scope>
     </dependency>
     <dependency>