chore(deps): update helm release external-dns to v1.15.1 (#2048)

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

Author: renovate[bot]

kubernetes/network/external-dns-private/kustomization.yaml

@@ -7,7 +7,7 @@ resources:
 helmCharts:
 - repo: https://kubernetes-sigs.github.io/external-dns
   name: external-dns
-  version: 1.15.0
+  version: 1.15.1
   releaseName: external-dns-private
   valuesFile: values.yaml
   namespace: network

kubernetes/network/external-dns-public/kustomization.yaml

@@ -7,7 +7,7 @@ resources:
 helmCharts:
 - repo: https://kubernetes-sigs.github.io/external-dns
   name: external-dns
-  version: 1.15.0
+  version: 1.15.1
   releaseName: external-dns-public
   valuesFile: values.yaml
   namespace: network