Bump codecov/codecov-action from v1.0.12 to v1.0.13

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from v1.0.12 to v1.0.13.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Commits](codecov/codecov-action@v1.0.12...6004246)

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

.github/workflows/CI.yml

@@ -39,7 +39,7 @@ jobs:
         env:
           REDIS_PORT: ${{ job.services.redis.ports['6379'] }}
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v1.0.12
+        uses: codecov/codecov-action@v1.0.13
         with:
           file: ./coverage.xml
   mutation_testing: