Bump actions/upload-artifact from 5 to 6 (#459)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/check.yaml

@@ -68,7 +68,7 @@ jobs:
         shell: python
       - name: "📦 Upload coverage data"
         if: ${{ !startsWith(matrix.py, 'pypy')}}
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           include-hidden-files: true
           name: .coverage.${{ matrix.os }}.${{ matrix.py }}
@@ -104,7 +104,7 @@ jobs:
         env:
           UV_PYTHON_PREFERENCE: only-managed
       - name: "📤 Upload HTML report"
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: html-report
           path: .tox/htmlcov

.github/workflows/release.yaml

@@ -18,7 +18,7 @@ jobs:
       - name: "📦 Build package"
         run: uv build --python 3.14 --python-preference only-managed --sdist --wheel . --out-dir dist
       - name: "📤 Store the distribution packages"
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: ${{ env.dists-artifact-name }}
           path: dist/*