chore(deps): update helm release prometheus-pushgateway to v3

Signed-off-by: usa-reddragon-renovate-ce[bot] <156608365+usa-reddragon-renovate-ce[bot]@users.noreply.github.com>

services/monitoring/helm.yaml

@@ -62,7 +62,7 @@ spec:
         kind: HelmRepository
         name: prometheus-community
         namespace: flux-system
-      version: '>=2.17.0 <3.0.0'
+      version: '>=3.0.0 <4.0.0'
       interval: 1m0s
   valuesFrom:
     - kind: ConfigMap