[wekan] bump to 5.39

pica-wekan/docker-compose.yml

@@ -23,9 +23,9 @@ services:
     restart: unless-stopped
 
   wekan-app:
-    image: quay.io/wekan/wekan-gantt-gpl:v5.38
+    image: quay.io/wekan/wekan-gantt-gpl:v5.39
     build:
-      context: http://github.com/wekan/wekan-gantt-gpl.git#v5.38
+      context: http://github.com/wekan/wekan-gantt-gpl.git#v5.39
     container_name: wekan-app
     environment:
       - MONGO_URL=mongodb://wekan-db:27017/wekan