Bump codecov/codecov-action from 5 to 6 (#1154)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 5 to 6.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v5...v6)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-version: '6'
  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>

Author: dependabot[bot]

.github/workflows/main.yml

@@ -67,7 +67,7 @@ jobs:
 
       - name: "Upload coverage to Codecov"
         if: "contains(env.USING_COVERAGE, matrix.python-version) && matrix.platform == 'ubuntu-latest'"
-        uses: "codecov/codecov-action@v5"
+        uses: "codecov/codecov-action@v6"
         with:
           fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}