Bump test-summary/action from 2.0 to 2.1 (aio-libs#958)

Bumps [test-summary/action](https://github.com/test-summary/action) from 2.0 to 2.1.
- [Release notes](https://github.com/test-summary/action/releases)
- [Commits](test-summary/action@v2.0...v2.1)

---
updated-dependencies:
- dependency-name: test-summary/action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/ci-cd.yml

@@ -213,7 +213,7 @@ jobs:
     - name: Produce markdown test summary from JUnit
       if: >-
         !cancelled()
-      uses: test-summary/action@v2.0
+      uses: test-summary/action@v2.1
       with:
         paths: .test-results/pytest/test.xml
     - name: Append coverage results to Job Summary