Merge pull request #218 from shortlink-org/renovate/prom-prometheus-3.x

chore(deps): update prom/prometheus docker tag to v3.9.0

Author: batazor

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

@@ -9,7 +9,7 @@ services:
 
   prometheus:
     <<: *network
-    image: prom/prometheus:v3.8.1
+    image: prom/prometheus:v3.9.0
     profiles:
       - observability
     container_name: prometheus