Update dock.mau.dev/mautrix/whatsapp Docker tag to v0.2512.0 (#2660)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| dock.mau.dev/mautrix/whatsapp | minor | `v0.2511.0` -> `v0.2512.0` |

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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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Reviewed-on: #2660
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/helm/matrix-synapse/values.yaml

@@ -333,7 +333,7 @@ mautrix-whatsapp:
         main:
           image:
             repository: dock.mau.dev/mautrix/whatsapp
-            tag: v0.2511.0
+            tag: v0.2512.0
             pullPolicy: IfNotPresent
           resources:
             requests: