Bump codecov/codecov-action from v1.0.15 to v1.3.1

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from v1.0.15 to v1.3.1.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/master/CHANGELOG.md)
- [Commits](codecov/codecov-action@v1.0.15...fcebab0)

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

.github/workflows/ci.yaml

@@ -782,4 +782,4 @@ jobs:
           coverage report --fail-under=94
           coverage xml
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v1.2.1
+        uses: codecov/codecov-action@v1.3.1