Bump codecov/codecov-action from v1.0.14 to v1.0.15

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from v1.0.14 to v1.0.15.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Commits](https://github.com/codecov/codecov-action/compare/v1.0.14...239febf655bba88b16ff5dea1d3135ea8663a1f9)

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

.github/workflows/main.yml

@@ -69,7 +69,7 @@ jobs:
           version: '0.12.3'
           timeout: 300
       - name: Upload coverage report to Codecov
-        uses: codecov/codecov-action@v1.0.14
+        uses: codecov/codecov-action@v1.0.15
         with:
           token: ${{ secrets.CODECOV_TOKEN }}