feat(cluster): use flux renovate manager to update flux

Signed-off-by: Devin Buhl <devin@buhl.casa>

cluster/base/flux-system/gotk-patches.yaml

@@ -0,0 +1,24 @@
+---
+# Delete the allow-egress NetworkPolicy
+$patch: delete
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-egress
+  namespace: flux-system
+---
+# Delete the allow-scraping NetworkPolicy
+$patch: delete
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-scraping
+  namespace: flux-system
+---
+# Delete the allow-webhooks NetworkPolicy
+$patch: delete
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-webhooks
+  namespace: flux-system

cluster/base/flux-system/kustomization.yaml

@@ -4,3 +4,5 @@ resources:
   - gotk-components.yaml
   - gotk-sync.yaml
   - charts
+patchesStrategicMerge:
+  - ./gotk-patches.yaml