Bump codecov/codecov-action from 4.0.1 to 4.6.0 (#817)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 4.0.1 to 4.6.0.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-action/compare/v4.0.1...v4.6.0)

---
updated-dependencies:
- dependency-name: codecov/codecov-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/pytest.yaml

@@ -68,7 +68,7 @@ jobs:
       - name: Explicitly convert coverage to xml
         run: coverage xml
       - name: Upload coverage reports to Codecov
-        uses: codecov/codecov-action@v4.0.1
+        uses: codecov/codecov-action@v4.6.0
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           slug: princeton-nlp/SWE-agent