FIX(headlamp): fix Helm repo URL

- Correct Headlamp Helm repository URL
- Fix chart source configuration

headlamp/argocd.yaml

@@ -8,9 +8,9 @@ metadata:
 spec:
   project: default
   sources:
-  - repoURL: https://headlamp-k8s.github.io/headlamp
+  - repoURL: https://kubernetes-sigs.github.io/headlamp
     chart: headlamp
-    targetRevision: 0.25.1
+    targetRevision: 0.31.0
     helm:
       valueFiles:
       - $values/headlamp/helm-values.yaml