Bump actions/upload-artifact from v1 to v2.0.1 (#37555)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from v1 to v2.0.1.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v1...97b7dace6c8d860ce9708aba808be6a2ee4cbc3a)

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

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

.github/workflows/ci.yaml

@@ -738,7 +738,7 @@ jobs:
             -p no:sugar \
             tests
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v2.0.1
         with:
           name: coverage-${{ matrix.python-version }}-group${{ matrix.group }}
           path: .coverage