Bump codecov/codecov-action from 2.0.3 to 4.6.0

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 2.0.3 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](codecov/codecov-action@v2.0.3...v4.6.0)

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

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

Author: dependabot[bot]

.github/workflows/backup.yaml

@@ -53,7 +53,7 @@ jobs:
         run: |
           make test
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v2.0.3
+        uses: codecov/codecov-action@v4.6.0
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: coverage.out