Bump codecov/codecov-action from 5.0.2 to 5.3.1

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 5.0.2 to 5.3.1.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@5c47607...13ce06b)

---
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>

.github/workflows/pre-submit.units.yml

@@ -52,7 +52,7 @@ jobs:
       - name: unit tests
         run: make go-test
       - name: Upload coverage reports to Codecov
-        uses: codecov/codecov-action@5c47607acb93fed5485fdbf7232e8a31425f672a # v5.0.2
+        uses: codecov/codecov-action@13ce06bfc6bbe3ecf90edbbf1bc32fe5978ca1d3 # v5.3.1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: coverage.out