build(deps): update quay.io/prometheus/prometheus docker tag to v3

Author: renovate[bot]

monitoring/lib/prometheus.libsonnet

@@ -4,7 +4,7 @@ local defaults = {
   common+: {
     versions+: {
       // renovate: datasource=docker depName=quay.io/prometheus/prometheus extractVersion=v(?<version>.*)$
-      prometheus: '2.55.1',
+      prometheus: '3.4.0',
     },
   },
   prometheus+: {