chore(deps): update azure/k8s-deploy action to v5.1.0 (#34)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [azure/k8s-deploy](https://github.com/azure/k8s-deploy) | action | minor | `v5.0.4` → `v5.1.0` |

---

### Release Notes

<details>
<summary>azure/k8s-deploy (azure/k8s-deploy)</summary>

### [`v5.1.0`](https://github.com/Azure/k8s-deploy/releases/tag/v5.1.0)

[Compare Source](https://github.com/azure/k8s-deploy/compare/v5.0.4...v5.1.0)

##### Added

- [#&#8203;458](https://github.com/azure/k8s-deploy/issues/458) [Ensure error messages display the correct namespace](https://github.com/Azure/k8s-deploy/pull/458)
- [#&#8203;482](https://github.com/azure/k8s-deploy/issues/482) [docker driver](https://github.com/Azure/k8s-deploy/pull/482)
- [#&#8203;492](https://github.com/azure/k8s-deploy/issues/492) [Migrate to esbuild/Vitest and upgrade @&#8203;actions/\* to ESM-only versions](https://github.com/Azure/k8s-deploy/pull/492)
- [#&#8203;498](https://github.com/azure/k8s-deploy/issues/498) [Add typecheck to build script](https://github.com/Azure/k8s-deploy/pull/498)

</details>

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Reviewed-on: https://gitea.t000-n.de/t.behrendt/k_deploy_workflows/pulls/34
Reviewed-by: t.behrendt <t.behrendt@noreply.localhost>
Co-authored-by: Renovate Bot <renovate@t00n.de>
Co-committed-by: Renovate Bot <renovate@t00n.de>

.gitea/workflows/cd.yaml

@@ -104,7 +104,7 @@ jobs:
             echo "No custom secrets to create"
           fi
       - name: Deploy Kubernetes manifests
-        uses: azure/k8s-deploy@6f7c489cecd8da05646259d9fa3daae92e095c7b # v5.0.4
+        uses: azure/k8s-deploy@c8cfec839dc09896b3b8cc40cd13d04792680771 # v5.1.0
         with:
           action: deploy
           manifests: "${{ inputs.k8s_dir }}"