Merge pull request #22 from xixu-me/dependabot/github_actions/codecov/codecov-action-6

Bump codecov/codecov-action from 5 to 6

.github/workflows/ci.yml

@@ -63,7 +63,7 @@ jobs:
 
       - name: Upload coverage to Codecov
         if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.12' && github.event_name == 'push' && github.ref == 'refs/heads/main'
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           slug: xixu-me/tzst