Update https://data.forgejo.org/actions/setup-forgejo action to v3.1.9 (forgejo) (#11980)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [https://data.forgejo.org/actions/setup-forgejo](https://code.forgejo.org/actions/setup-forgejo) | action | patch | `v3.1.8` → `v3.1.9` |

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### Release Notes

<details>
<summary>actions/setup-forgejo (https://data.forgejo.org/actions/setup-forgejo)</summary>

### [`v3.1.9`](https://code.forgejo.org/actions/setup-forgejo/compare/v3.1.8...v3.1.9)

[Compare Source](https://code.forgejo.org/actions/setup-forgejo/compare/v3.1.8...v3.1.9)

</details>

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### Configuration

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This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
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Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/11980
Reviewed-by: Mathieu Fenniak <mfenniak@noreply.codeberg.org>
Co-authored-by: Renovate Bot <bot@kriese.eu>
Co-committed-by: Renovate Bot <bot@kriese.eu>

.forgejo/workflows/build-release-integration.yml

@@ -32,7 +32,7 @@ jobs:
       - uses: https://data.forgejo.org/actions/checkout@v6
 
       - id: forgejo
-        uses: https://data.forgejo.org/actions/setup-forgejo@v3.1.8
+        uses: https://data.forgejo.org/actions/setup-forgejo@v3.1.9
         with:
           user: root
           password: admin1234