Update prom/prometheus Docker tag to v3.11.1

Author: renovate[bot]

docker-compose.yml

@@ -140,7 +140,7 @@ services:
     restart: always
 
   prometheus:
-    image: prom/prometheus:v3.2.0@sha256:5888c188cf09e3f7eebc97369c3b2ce713e844cdbd88ccf36f5047c958aea120
+    image: prom/prometheus:v3.11.1@sha256:759ea6db49103737f2a6f420b0d1632062d8ad99dec086c76db605fd0bf23e15
     command:
       - "--web.external-url=https://${PROMETHEUS_DOMAIN:-prometheus.owncloud.test}"
       - "--config.file=/etc/prometheus/prometheus.yml"