chore(deps): update docker/metadata-action action to v5 (#6667)

[![Mend
Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [docker/metadata-action](https://togithub.com/docker/metadata-action)
| action | major | `v4` -> `v5` |

---

### Release Notes

<details>
<summary>docker/metadata-action (docker/metadata-action)</summary>

### [`v5`](https://togithub.com/docker/metadata-action/compare/v4...v5)

[Compare
Source](https://togithub.com/docker/metadata-action/compare/v4...v5)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "after 7pm every weekday,before 5am
every weekday" in timezone Europe/Madrid, Automerge - At any time (no
schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View
repository job log
[here](https://developer.mend.io/github/Unleash/unleash).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yNjEuMCIsInVwZGF0ZWRJblZlciI6IjM3LjI2MS4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/docker_publish.yaml

@@ -29,7 +29,7 @@ jobs:
       - name: Setup Docker buildx
         uses: docker/setup-buildx-action@v2
       - name: Docker meta configuration
-        uses: docker/metadata-action@v4
+        uses: docker/metadata-action@v5
         id: meta
         with:
           images: |