Update Helm release rook-ceph-cluster to v1.18.9 (#3197)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [rook-ceph-cluster](https://github.com/rook/rook) | patch | `v1.18.8` → `v1.18.9` |

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> ⚠️ **Warning**
>
> Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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### Release Notes

<details>
<summary>rook/rook (rook-ceph-cluster)</summary>

### [`v1.18.9`](https://github.com/rook/rook/releases/tag/v1.18.9)

[Compare Source](https://github.com/rook/rook/compare/v1.18.8...v1.18.9)

### Improvements

Rook v1.18.9 is a patch release limited in scope and focusing on feature additions and bug fixes to the Ceph operator.

- csi: Disable read affinity for ceph v20.2.0 to avoid corruption ([#&#8203;16895](https://github.com/rook/rook/issues/16895), [@&#8203;travisn](https://github.com/travisn))
- core: Allow skipping cephcluster reconcile via do-not-reconcile label ([#&#8203;16874](https://github.com/rook/rook/issues/16874), [@&#8203;OdedViner](https://github.com/OdedViner))
- helm: Merge rook-config-override ConfigMap into toolbox ceph.conf ([#&#8203;16862](https://github.com/rook/rook/issues/16862), [@&#8203;mheler](https://github.com/mheler))
- helm: Add cephclusters/finalizers permission for mgr sidecar ([#&#8203;16854](https://github.com/rook/rook/issues/16854), [@&#8203;grandeit](https://github.com/grandeit))
- csi: Add fix to support multiple fs mount option ([#&#8203;16837](https://github.com/rook/rook/issues/16837), [@&#8203;subhamkrai](https://github.com/subhamkrai))
- operator: Watch cephConfigFromSecret changes ([#&#8203;16786](https://github.com/rook/rook/issues/16786), [@&#8203;cyanidium](https://github.com/cyanidium))
- rgw: Support all S3 notification events in CRD validation ([#&#8203;16804](https://github.com/rook/rook/issues/16804), [@&#8203;arttor](https://github.com/arttor))
- docs: Add pool parameter for erasure code optimizations ([#&#8203;16789](https://github.com/rook/rook/issues/16789), [@&#8203;travisn](https://github.com/travisn))

</details>

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Reviewed-on: https://gitea.alexlebens.dev/alexlebens/infrastructure/pulls/3197
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/helm/rook-ceph/Chart.lock

@@ -4,9 +4,9 @@ dependencies:
   version: v1.18.9
 - name: rook-ceph-cluster
   repository: https://charts.rook.io/release
-  version: v1.18.8
+  version: v1.18.9
 - name: cloudflared
   repository: oci://harbor.alexlebens.net/helm-charts
   version: 2.1.6
-digest: sha256:e7543a219a336c98d67ea10c72cd8b4401e6bb4afa1ca67b87fd3c33bdbb0d60
-generated: "2026-01-14T20:01:41.486176203Z"
+digest: sha256:fc0c562e0b47bd730251c2ed1ad48f1b0c57dfb730fd161fb905933817ba2c69
+generated: "2026-01-14T21:08:53.897492563Z"

clusters/cl01tl/helm/rook-ceph/Chart.yaml

@@ -19,7 +19,7 @@ dependencies:
     version: v1.18.9
     repository: https://charts.rook.io/release
   - name: rook-ceph-cluster
-    version: v1.18.8
+    version: v1.18.9
     repository: https://charts.rook.io/release
   - name: cloudflared
     alias: cloudflared-rgw