Bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yml

@@ -126,7 +126,7 @@ jobs:
         run: |
           python -m cibuildwheel --output-dir wheelhouse
 
-      - uses: actions/upload-artifact@v3  # Don't upgrade to v4 until each artifact is named
+      - uses: actions/upload-artifact@v4  # Don't upgrade to v4 until each artifact is named
         with:
           path: ./wheelhouse/*.whl
 
@@ -162,7 +162,7 @@ jobs:
           python -m pip install --upgrade "setuptools>=61" wheel "numpy>=2.0,<3"
           python setup.py sdist
 
-      - uses: actions/upload-artifact@v3  # Don't upgrade to v4 until each artifact is named
+      - uses: actions/upload-artifact@v4  # Don't upgrade to v4 until each artifact is named
         with:
           path: dist/*.tar.gz