chore(deps): update chart alloy to 1.4.0

Author: renovate[bot]

kubernetes/apps/monitoring/alloy/helmrelease.yaml

@@ -11,7 +11,7 @@ spec:
     spec:
       # renovate: registryUrl=https://grafana.github.io/helm-charts
       chart: alloy
-      version: '1.3.0'
+      version: '1.4.0'
       sourceRef:
         kind: HelmRepository
         name: grafana