fix(helm): update chart cilium to 1.15.4 (#1426)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

bootstrap/templates/kubernetes/bootstrap/talos/apps/helmfile.yaml.j2

@@ -16,7 +16,7 @@ releases:
   - name: cilium
     namespace: kube-system
     chart: cilium/cilium
-    version: 1.15.3
+    version: 1.15.4
     values: ["./cilium-values.yaml"]
   - name: kubelet-csr-approver
     namespace: kube-system