Update actions/upload-artifact action to v4 (#530)

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

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[actions/upload-artifact](https://togithub.com/actions/upload-artifact)
| action | major | `v3` -> `v4` |

---

### Release Notes

<details>
<summary>actions/upload-artifact (actions/upload-artifact)</summary>

### [`v4`](https://togithub.com/actions/upload-artifact/compare/v3...v4)

[Compare
Source](https://togithub.com/actions/upload-artifact/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 [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View
repository job log [here](https://developer.mend.io/github/agbrs/agb).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy45My4xIiwidXBkYXRlZEluVmVyIjoiMzcuMTAzLjEiLCJ0YXJnZXRCcmFuY2giOiJtYXN0ZXIifQ==-->

.github/workflows/build-and-test.yml

@@ -44,7 +44,7 @@ jobs:
       - name: Build and test all crates
         run: just ci
       - name: Upload build artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: example-games
           path: ~/target/*.gba