chore(deps): update actions/upload-artifact action to v7 (#161)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[actions/upload-artifact](https://redirect.github.com/actions/upload-artifact)
| action | major | `v6` → `v7` |

---

### Release Notes

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

###
[`v7`](https://redirect.github.com/actions/upload-artifact/compare/v6...v7)

[Compare
Source](https://redirect.github.com/actions/upload-artifact/compare/v6...v7)

</details>

---

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---

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.github/workflows/publishing.yaml

@@ -20,7 +20,7 @@ jobs:
         run: uv sync --locked --no-dev
       - name: Run build
         run: uv build
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: python-package-distributions
           path: dist/