Bump actions/download-artifact from 4.2.1 to 4.3.0 (#393)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.2.1 to 4.3.0.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4.2.1...v4.3.0)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: 4.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/tests.yaml

@@ -57,7 +57,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: ⬇️ Download coverage data
-        uses: actions/download-artifact@v4.2.1
+        uses: actions/download-artifact@v4.3.0
       - name: 🏗 Set up Poetry
         run: pipx install poetry
       - name: 🏗 Set up Python ${{ env.DEFAULT_PYTHON }}