build(deps): bump codecov/codecov-action from 2.1.0 to 3.1.5

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 2.1.0 to 3.1.5.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v2.1.0...v3.1.5)

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

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

.github/workflows/CI.yml

@@ -37,6 +37,6 @@ jobs:
           CI: true
 
       - name: Upload coverage to Codecov  
-        uses: codecov/codecov-action@v2.1.0
+        uses: codecov/codecov-action@v3.1.5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}