Bump actions/upload-artifact from v2.1.3 to v2.1.4 (#38779)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from v2.1.3 to v2.1.4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v2.1.3...58740802ef971a2d71eff71e63d48ab68d1f5507)

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

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

.github/workflows/ci.yaml

@@ -737,7 +737,7 @@ jobs:
             -p no:sugar \
             tests
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v2.1.3
+        uses: actions/upload-artifact@v2.1.4
         with:
           name: coverage-${{ matrix.python-version }}-group${{ matrix.group }}
           path: .coverage