Update to Jetty 9.4.19.v20190610

Fixes gh-6983

Author: eleftherias

gradle/dependency-management.gradle

@@ -151,17 +151,17 @@ dependencyManagement {
 		dependency 'org.codehaus.groovy:groovy-json:2.4.14'
 		dependency 'org.codehaus.groovy:groovy:2.4.14'
 		dependency 'org.eclipse.jdt:ecj:3.12.3'
-		dependency 'org.eclipse.jetty.websocket:websocket-api:9.4.12.v20180830'
-		dependency 'org.eclipse.jetty.websocket:websocket-client:9.4.12.v20180830'
-		dependency 'org.eclipse.jetty.websocket:websocket-common:9.4.12.v20180830'
-		dependency 'org.eclipse.jetty:jetty-client:9.4.12.v20180830'
-		dependency 'org.eclipse.jetty:jetty-http:9.4.12.v20180830'
-		dependency 'org.eclipse.jetty:jetty-io:9.4.12.v20180830'
-		dependency 'org.eclipse.jetty:jetty-security:9.4.12.v20180830'
-		dependency 'org.eclipse.jetty:jetty-server:9.4.12.v20180830'
-		dependency 'org.eclipse.jetty:jetty-servlet:9.4.12.v20180830'
-		dependency 'org.eclipse.jetty:jetty-util:9.4.12.v20180830'
-		dependency 'org.eclipse.jetty:jetty-xml:9.4.12.v20180830'
+		dependency 'org.eclipse.jetty.websocket:websocket-api:9.4.19.v20190610'
+		dependency 'org.eclipse.jetty.websocket:websocket-client:9.4.19.v20190610'
+		dependency 'org.eclipse.jetty.websocket:websocket-common:9.4.19.v20190610'
+		dependency 'org.eclipse.jetty:jetty-client:9.4.19.v20190610'
+		dependency 'org.eclipse.jetty:jetty-http:9.4.19.v20190610'
+		dependency 'org.eclipse.jetty:jetty-io:9.4.19.v20190610'
+		dependency 'org.eclipse.jetty:jetty-security:9.4.19.v20190610'
+		dependency 'org.eclipse.jetty:jetty-server:9.4.19.v20190610'
+		dependency 'org.eclipse.jetty:jetty-servlet:9.4.19.v20190610'
+		dependency 'org.eclipse.jetty:jetty-util:9.4.19.v20190610'
+		dependency 'org.eclipse.jetty:jetty-xml:9.4.19.v20190610'
 		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'