fix: use ghcr for flux images

cluster/flux/flux-system/flux-installation.yaml

@@ -29,6 +29,19 @@ spec:
   sourceRef:
     kind: GitRepository
     name: flux-installation
+  images:
+    - name: fluxcd/helm-controller
+      newName: ghcr.io/fluxcd/helm-controller
+    - name: fluxcd/image-automation-controller
+      newName: ghcr.io/fluxcd/image-automation-controller
+    - name: fluxcd/image-reflector-controller
+      newName: ghcr.io/fluxcd/image-reflector-controller
+    - name: fluxcd/kustomize-controller
+      newName: ghcr.io/fluxcd/kustomize-controller
+    - name: fluxcd/notification-controller
+      newName: ghcr.io/fluxcd/notification-controller
+    - name: fluxcd/source-controller
+      newName: ghcr.io/fluxcd/source-controller
   patches:
     - target:
         group: networking.k8s.io