Update Backend Version to 6.1.1

Author: EmteZogaf

feasibility-portal/backend/docker-compose.yml

@@ -1,7 +1,7 @@
 services:
   dataportal-backend:
     restart: unless-stopped
-    image: ghcr.io/medizininformatik-initiative/feasibility-backend:6.1.0
+    image: ghcr.io/medizininformatik-initiative/feasibility-backend:6.1.1
     ports:
     - ${DATAPORTAL_BACKEND_PORT:-127.0.0.1:8091}:8090
     depends_on:
@@ -144,4 +144,4 @@ volumes:
   dataportal-deploy-postgres-data:
     name: "dataportal-deploy-postgres-data"
   dataportal-deploy-elastic-data:
-    name: "dataportal-deploy-elastic-data"
+    name: "dataportal-deploy-elastic-data"