Update Helm chart argo-cd to v7

| datasource | package | from   | to    |
| ---------- | ------- | ------ | ----- |
| helm       | argo-cd | 5.55.0 | 7.8.2 |

Author: renovate[bot]

kubernetes/core/argocd/Chart.yaml

@@ -4,5 +4,5 @@ apiVersion: v2
 version: 1.0.0
 dependencies:
   - name: argo-cd
-    version: 5.55.0
+    version: 7.8.2
     repository: https://argoproj.github.io/argo-helm