chore(stacks): sync generated stacks for renovate update

Author: renovate[bot]

stacks/observability.yml

@@ -175,7 +175,7 @@ services:
           memory: 384M
           cpus: '0.40'
   prometheus:
-    image: prom/prometheus:v3.11.2
+    image: prom/prometheus:v3.11.3
     command:
       - --config.file=/etc/prometheus/prometheus.yml
       - --storage.tsdb.path=/prometheus