Update to GS 2.27.x

Author: giohappy

docker/geoserver/Dockerfile

@@ -3,7 +3,7 @@ ARG JAVA_HOME=/usr/local/openjdk-11
 FROM tomcat:$IMAGE_VERSION
 LABEL GeoNode Development Team
 
-ARG GEOSERVER_VERSION=2.27.2
+ARG GEOSERVER_VERSION=2.27.x
 ARG GEOSERVER_CORS_ENABLED=False
 ARG GEOSERVER_CORS_ALLOWED_ORIGINS=*
 ARG GEOSERVER_CORS_ALLOWED_METHODS=GET,POST,PUT,DELETE,HEAD,OPTIONS