chore(deps): update actions/upload-artifact action to v4.5.0 (open-feature#332)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[actions/upload-artifact](https://redirect.github.com/actions/upload-artifact)
| action | minor | `v4.4.3` -> `v4.5.0` |

---

### Release Notes

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

###
[`v4.5.0`](https://redirect.github.com/actions/upload-artifact/compare/v4.4.3...v4.5.0)

[Compare
Source](https://redirect.github.com/actions/upload-artifact/compare/v4.4.3...v4.5.0)

</details>

---

### Configuration

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Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR is behind base branch, 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

---

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.github/workflows/ci.yml

@@ -87,7 +87,7 @@ jobs:
 
       - name: Publish NuGet packages (fork)
         if: github.event.pull_request.head.repo.fork == true
-        uses: actions/upload-artifact@v4.4.3
+        uses: actions/upload-artifact@v4.5.0
         with:
           name: nupkgs
           path: src/**/*.nupkg