Update to Jetty 9.4.42.v20210604

Closes gh-9964

Author: eleftherias

gradle/dependency-management.gradle

@@ -162,17 +162,17 @@ dependencyManagement {
 		dependency 'org.codehaus.groovy:groovy-json:2.4.21'
 		dependency 'org.codehaus.groovy:groovy:2.4.21'
 		dependency 'org.eclipse.jdt:ecj:3.12.3'
-		dependency 'org.eclipse.jetty.websocket:websocket-api:9.4.36.v20210114'
-		dependency 'org.eclipse.jetty.websocket:websocket-client:9.4.36.v20210114'
-		dependency 'org.eclipse.jetty.websocket:websocket-common:9.4.36.v20210114'
-		dependency 'org.eclipse.jetty:jetty-client:9.4.36.v20210114'
-		dependency 'org.eclipse.jetty:jetty-http:9.4.36.v20210114'
-		dependency 'org.eclipse.jetty:jetty-io:9.4.36.v20210114'
-		dependency 'org.eclipse.jetty:jetty-security:9.4.36.v20210114'
-		dependency 'org.eclipse.jetty:jetty-server:9.4.36.v20210114'
-		dependency 'org.eclipse.jetty:jetty-servlet:9.4.36.v20210114'
-		dependency 'org.eclipse.jetty:jetty-util:9.4.36.v20210114'
-		dependency 'org.eclipse.jetty:jetty-xml:9.4.36.v20210114'
+		dependency 'org.eclipse.jetty.websocket:websocket-api:9.4.42.v20210604'
+		dependency 'org.eclipse.jetty.websocket:websocket-client:9.4.42.v20210604'
+		dependency 'org.eclipse.jetty.websocket:websocket-common:9.4.42.v20210604'
+		dependency 'org.eclipse.jetty:jetty-client:9.4.42.v20210604'
+		dependency 'org.eclipse.jetty:jetty-http:9.4.42.v20210604'
+		dependency 'org.eclipse.jetty:jetty-io:9.4.42.v20210604'
+		dependency 'org.eclipse.jetty:jetty-security:9.4.42.v20210604'
+		dependency 'org.eclipse.jetty:jetty-server:9.4.42.v20210604'
+		dependency 'org.eclipse.jetty:jetty-servlet:9.4.42.v20210604'
+		dependency 'org.eclipse.jetty:jetty-util:9.4.42.v20210604'
+		dependency 'org.eclipse.jetty:jetty-xml:9.4.42.v20210604'
 		dependency 'org.eclipse.persistence:javax.persistence:2.2.1'
 		dependency 'org.gebish:geb-ast:0.10.0'
 		dependency 'org.gebish:geb-core:0.10.0'