Bump org.eclipse.jetty:jetty-maven-plugin from 11.0.19 to 11.0.20

Bumps org.eclipse.jetty:jetty-maven-plugin from 11.0.19 to 11.0.20.

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

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

pom.xml

@@ -176,7 +176,7 @@
                 <plugin>
                     <groupId>org.eclipse.jetty</groupId>
                     <artifactId>jetty-maven-plugin</artifactId>
-                    <version>11.0.19</version>
+                    <version>11.0.20</version>
                 </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>