Bump the github-actions group with 1 update

Bumps the github-actions group with 1 update: [codecov/codecov-action](https://github.com/codecov/codecov-action).


Updates `codecov/codecov-action` from 3 to 4
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v3...v4)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/ci.yml

@@ -72,4 +72,4 @@ jobs:
 
       - name: Upload coverage reports to Codecov
         if: matrix.python_version == env.MAIN_PYTHON_VERSION
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4