fix(helm): update chart cilium to 1.15.7 (#2662)

Co-authored-by: layla-bot[bot] <138733633+layla-bot[bot]@users.noreply.github.com>

Author: layla-bot[bot]

ansible/storage/playbooks/templates/custom-cilium-helmchart.yaml.j2

@@ -8,7 +8,7 @@ spec:
   repo: https://helm.cilium.io/
   chart: cilium
   # renovate: datasource=helm depName=cilium repository=https://helm.cilium.io
-  version: 1.15.6
+  version: 1.15.7
   targetNamespace: kube-system
   bootstrap: true
   valuesContent: |-