Update Helm release external-dns to v1.18.0

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [metrics-server](https://github.com/kubernetes-sigs/metrics-server) | minor | `3.12.2` -> `3.13.0` |

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### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

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 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

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This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
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Reviewed-on: #996
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/applications/libation/values.yaml

@@ -16,7 +16,7 @@ libation:
         main:
           image:
             repository: rmcrackan/libation
-            tag: 12.4.8
+            tag: 12.4.9
             pullPolicy: IfNotPresent
           env:
             - name: SLEEP_TIME

clusters/cl01tl/standalone/metrics-server/Chart.yaml

@@ -14,7 +14,7 @@ maintainers:
   - name: alexlebens
 dependencies:
   - name: metrics-server
-    version: 3.12.2
+    version: 3.13.0
     repository: https://kubernetes-sigs.github.io/metrics-server/
 icon: https://cdn.jsdelivr.net/gh/selfhst/icons/png/kubernetes.png
 appVersion: 0.7.2