Bump actions/upload-artifact from 6 to 7 (#304)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/cibuildwheel.yml

@@ -38,7 +38,7 @@ jobs:
       - uses: actions/checkout@v6
       - name: Run cibuildwheel
         uses: pypa/cibuildwheel@v3.3.1
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: artifact-${{ matrix.os }}
           path: ./wheelhouse/*.whl
@@ -56,7 +56,7 @@ jobs:
         run: |
           python -m pip install build numpy
           python -m build --sdist
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: artifact-sdist
           path: dist/*.tar.gz