chore(deps): update valkey docker tag to v0.3.0 (#4479)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [valkey](https://github.com/valkey-io/valkey) | minor | `0.2.0` → `0.3.0` |

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### Configuration

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This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
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Reviewed-on: #4479
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/helm/outline/Chart.lock

@@ -10,6 +10,6 @@ dependencies:
   version: 7.8.0
 - name: valkey
   repository: oci://harbor.alexlebens.net/helm-charts
-  version: 0.2.0
-digest: sha256:1dda4205ea4d6594193e749ff3f3fc30e4dbc3358f0791ca3a1450ca0f543770
-generated: "2026-03-05T22:40:07.385454-06:00"
+  version: 0.3.0
+digest: sha256:bbee925922519c634f9e4ccc716f26e701661fceaed9a729b3aab1a190e3f870
+generated: "2026-03-06T06:34:57.973236378Z"