fix(harbor): enable automated selfHeal on harbor Application

Matches what was manually set on the drifted live Application so that
Argo CD reconciles from Forgejo automatically. Non-destructive
(prune: false).

Refs DEV-458.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/app-harbor.yaml

@@ -13,5 +13,8 @@ spec:
     server: https://kubernetes.default.svc
     namespace: harbor
   syncPolicy:
+    automated:
+      prune: false
+      selfHeal: true
     syncOptions:
     - CreateNamespace=true