chore(deps): update https://git.keligrubb.com/actions/setup-helm action to v5 (#23)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [https://git.keligrubb.com/actions/setup-helm](https://git.keligrubb.com/actions/setup-helm) | action | major | `v4` → `v5` |

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### Release Notes

<details>
<summary>actions/setup-helm (https://git.keligrubb.com/actions/setup-helm)</summary>

### [`v5`](https://git.keligrubb.com/actions/setup-helm/compare/v4...v5)

[Compare Source](https://git.keligrubb.com/actions/setup-helm/compare/v4...v5)

</details>

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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 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 [Renovate Bot](https://github.com/renovatebot/renovate).
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Reviewed-on: #23
Co-authored-by: Renovate Bot <renovate@keligrubb.com>
Co-committed-by: Renovate Bot <renovate@keligrubb.com>

.gitea/workflows/push.yml

@@ -50,7 +50,7 @@ jobs:
           done < .tags
 
       - name: Set up Helm
-        uses: https://git.keligrubb.com/actions/setup-helm@v4
+        uses: https://git.keligrubb.com/actions/setup-helm@v5
 
       - name: Package and push Helm chart
         env: