Upgrade github actions.

Author: james-choncholas

.github/workflows/wheel.yaml

@@ -34,8 +34,9 @@ jobs:
           bazelisk build //:wheel
           bazelisk run //:wheel_rename
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
+          name: artifact-${{ matrix.os }}-${{ matrix.python-version }}
           path: bazel-bin/*.whl
 
   upload_pypi:
@@ -49,10 +50,11 @@ jobs:
     if: github.event_name == 'release' && github.event.action == 'published'
     steps:
       - name: Download wheels
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
-          name: artifact
+          pattern: 'artifact-*'
           path: dist
+          merge-multiple: true
 
       - name: Publish to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1