Update dpage/pgadmin4 Docker tag to v9.6 (#1028)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| dpage/pgadmin4 | minor | `9.5` -> `9.6` |

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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: #1028
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/storage/pgadmin/values.yaml

@@ -28,7 +28,7 @@ pgadmin4:
             runAsGroup: 5050
           image:
             repository: dpage/pgadmin4
-            tag: "9.5"
+            tag: "9.6"
             pullPolicy: IfNotPresent
           env:
             - name: PGADMIN_CONFIG_ENHANCED_COOKIE_PROTECTION