chore(deps): 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/build.yml

@@ -40,7 +40,7 @@ jobs:
           make ci
       -
         name: Upload coverage
-        uses: codecov/codecov-action@v1.0.15
+        uses: codecov/codecov-action@v1.3.1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: ./coverage.txt