build(deps): bump actions/upload-artifact from 4 to 6 (#108)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v6)

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

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

Author: dependabot[bot]

.github/workflows/build-and-publish-to-pypi.yml

@@ -53,7 +53,7 @@ jobs:
           CIBW_BEFORE_BUILD_WINDOWS: pip install delvewheel
           CIBW_REPAIR_WHEEL_COMMAND_WINDOWS: "delvewheel show {wheel} && delvewheel repair -w {dest_dir} {wheel} --no-mangle-all"
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v6
         with:
           name: artifact-wheels-${{ matrix.os }}
           path: ./wheelhouse/*.whl
@@ -69,7 +69,7 @@ jobs:
       - name: Build sdist
         run: pipx run build --sdist
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v6
         with:
           name: artifact-source
           path: dist/*.tar.gz