Bump actions/upload-artifact from 2.2.4 to 2.3.0

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2.2.4 to 2.3.0.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v2.2.4...v2.3.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -220,7 +220,7 @@ jobs:
           . venv/bin/activate
           pytest --benchmark-disable --cov --cov-report= tests/
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v2.2.4
+        uses: actions/upload-artifact@v2.3.0
         with:
           name: coverage-${{ matrix.python-version }}
           path: .coverage
@@ -313,7 +313,7 @@ jobs:
         run: >-
           echo "::set-output name=datetime::"$(date "+%Y%m%d_%H%M")
       - name: Upload benchmark artifact
-        uses: actions/upload-artifact@v2.2.4
+        uses: actions/upload-artifact@v2.3.0
         with:
           name:
             benchmark-${{ runner.os }}-${{ matrix.python-version }}_${{