Bump codecov/codecov-action from 3.1.0 to 3.1.3

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3.1.0 to 3.1.3.
- [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/v3.1.0...v3.1.3)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/backend_tests.yml

@@ -273,7 +273,7 @@ jobs:
           nox --force-color --session=coverage -- xml
 
       - name: Upload coverage report
-        uses: codecov/codecov-action@v3.1.0
+        uses: codecov/codecov-action@v3.1.3
 
       - name: SonarCloud Scan
         uses: sonarsource/sonarcloud-github-action@master