Update opencti/worker Docker tag to v6.8.13

Author: renovate[bot]

docker-compose.yml

@@ -116,7 +116,7 @@ services:
       timeout: 5s
       retries: 20
   worker:
-    image: opencti/worker:6.8.5
+    image: opencti/worker:6.8.13
     environment:
       - OPENCTI_URL=http://opencti:8080
       - OPENCTI_TOKEN=${OPENCTI_ADMIN_TOKEN}