chore(deps): update docker.osgeo.org/geoserver docker tag to v2.28.0

Author: renovate[bot]

common-services.yml

@@ -6,7 +6,7 @@ services:
       - ./shogun-print/print-apps:/usr/local/tomcat/webapps/ROOT/print-apps:Z
   shogun-geoserver:
     container_name: ${CONTAINER_NAME_PREFIX}-geoserver
-    image: docker.osgeo.org/geoserver:2.27.1
+    image: docker.osgeo.org/geoserver:2.28.0
     environment:
       EXTRA_JAVA_OPTS: -Xms1g -Xmx2g -DGEOSERVER_CSRF_WHITELIST=${GEOSERVER_CSRF_WHITELIST} -Dgwc.context.suffix=gwc
       STABLE_EXTENSIONS: geofence-server-postgres,importer,sec-keycloak,web-resource