chore(deps): update actions/setup-go action to v5 (#12)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/setup-go](https://github.com/actions/setup-go) | action | major | `v3` -> `v5` |

---

### Release Notes

<details>
<summary>actions/setup-go (actions/setup-go)</summary>

### [`v5`](https://github.com/actions/setup-go/compare/v4...v5)

[Compare Source](https://github.com/actions/setup-go/compare/v4...v5)

### [`v4`](https://github.com/actions/setup-go/compare/v3...v4)

[Compare Source](https://github.com/actions/setup-go/compare/v3...v4)

</details>

---

### 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).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy40MjQuMyIsInVwZGF0ZWRJblZlciI6IjM3LjQyNC4zIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbXX0=-->

Co-authored-by: Renovate Bot <renovate-bot@gitea.com>
Reviewed-on: #12

.gitea/workflows/push.yaml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-go@v3
+      - uses: actions/setup-go@v5
         with:
           go-version: "1.22"
           cache: true