Bump actions/upload-artifact from 2 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v2...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/ci.yml

@@ -192,7 +192,7 @@ jobs:
           CIBW_ARCHS: "${{ matrix.arch }}"
 
       - name: Upload wheels
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: wheels
           path: ./wheelhouse/*.whl

.github/workflows/pypi.yml

@@ -73,7 +73,7 @@ jobs:
         CIBW_ARCHS: "${{ matrix.arch }}"
 
     - name: Upload wheels
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: wheels
         path: ./wheelhouse/*.whl