Bump actions/upload-artifact from 6 to 7 (#1200)

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/ci.yml

@@ -52,7 +52,7 @@ jobs:
       - name: Run tox for lint and docs
         run: |
           tox -e lint,docs
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: docs
           path: ./docs/_build
@@ -103,7 +103,7 @@ jobs:
           CIBW_ARCHS: ${{ matrix.buildplat[1] }}
           MACOSX_DEPLOYMENT_TARGET: "11.0"
 
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: dist-${{ matrix.python }}-${{ startsWith(matrix.buildplat[1], 'macosx') && 'macosx' || matrix.buildplat[1] }}
           path: ./wheelhouse/*.whl
@@ -132,7 +132,7 @@ jobs:
     - run: cat pyproject.toml
     - name: Build SDist
       run: pipx run build --sdist
-    - uses: actions/upload-artifact@v6
+    - uses: actions/upload-artifact@v7
       with:
         name: dist-sdist
         path: dist/*.tar.gz