fix(deps): update jetty to v11.0.20

Author: renovate[bot]

gradle/libs.versions.toml

@@ -15,7 +15,7 @@ guava = "33.0.0-jre"
 logback = "1.4.14"
 slf4j = "2.0.11"
 
-jetty = "11.0.19"
+jetty = "11.0.20"
 jersey_container_servlet = "3.1.5"
 jersey_hk2 = "3.1.5"
 jersey_media_json_jackson = "3.1.5"