Bump tj-actions/coverage-badge-py from 1.8 to 2 (#218)

Bumps [tj-actions/coverage-badge-py](https://github.com/tj-actions/coverage-badge-py) from 1.8 to 2.
- [Release notes](https://github.com/tj-actions/coverage-badge-py/releases)
- [Changelog](https://github.com/tj-actions/coverage-badge-py/blob/main/HISTORY.md)
- [Commits](tj-actions/coverage-badge-py@v1.8...v2)

---
updated-dependencies:
- dependency-name: tj-actions/coverage-badge-py
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/tests.yaml

@@ -87,7 +87,7 @@ jobs:
             tests
 
       - name: coverage.py badge
-        uses: tj-actions/coverage-badge-py@v1.8
+        uses: tj-actions/coverage-badge-py@v2
 
       - name: Verify Changed files
         uses: tj-actions/verify-changed-files@v19