Update https://data.forgejo.org/actions/setup-forgejo action to v3.0.3 (#969)

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 | `v3.0.2` -> `v3.0.3` |

---

### Release Notes

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

### [`v3.0.3`](https://code.forgejo.org/actions/setup-forgejo/compare/v3.0.2...v3.0.3)

[Compare Source](https://code.forgejo.org/actions/setup-forgejo/compare/v3.0.2...v3.0.3)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - Between 12:00 AM and 03:59 AM ( * 0-3 * * * ) (UTC), Automerge - Between 12:00 AM and 03:59 AM ( * 0-3 * * * ) (UTC).

🚦 **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).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS45Ny45IiwidXBkYXRlZEluVmVyIjoiNDEuOTcuOSIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiS2luZC9EZXBlbmRlbmN5VXBkYXRlIiwicnVuLWVuZC10by1lbmQtdGVzdHMiXX0=-->

Reviewed-on: https://code.forgejo.org/forgejo/runner/pulls/969
Reviewed-by: earl-warren <earl-warren@noreply.code.forgejo.org>
Reviewed-by: Michael Kriese <michael.kriese@gmx.de>
Co-authored-by: Renovate Bot <bot@kriese.eu>
Co-committed-by: Renovate Bot <bot@kriese.eu>

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

@@ -29,7 +29,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - id: forgejo
-        uses: https://data.forgejo.org/actions/setup-forgejo@v3.0.2
+        uses: https://data.forgejo.org/actions/setup-forgejo@v3.0.3
         with:
           user: root
           password: admin1234

.forgejo/workflows/docker-build-push-action-in-lxc.yml

@@ -34,7 +34,7 @@ jobs:
 
       - name: install Forgejo so it can be used as a container registry
         id: registry
-        uses: https://data.forgejo.org/actions/setup-forgejo@v3.0.2
+        uses: https://data.forgejo.org/actions/setup-forgejo@v3.0.3
         with:
           user: ${{ env.FORGEJO_USER }}
           password: ${{ env.FORGEJO_PASSWORD }}

.forgejo/workflows/example-lxc-systemd.yml

@@ -53,7 +53,7 @@ jobs:
            done
 
        - id: forgejo
-         uses: https://data.forgejo.org/actions/setup-forgejo@v3.0.2
+         uses: https://data.forgejo.org/actions/setup-forgejo@v3.0.3
          with:
            user: root
            password: admin1234