Update prom/prometheus Docker tag to v3.12.0

Author: renovate[bot]

ops/docker-compose/tooling/observability/prometheus/compose.yaml

@@ -9,7 +9,7 @@ services:
 
   prometheus:
     <<: *network
-    image: prom/prometheus:v3.11.2
+    image: prom/prometheus:v3.12.0
     profiles:
       - observability
     container_name: prometheus