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](https://github.com/codecov/codecov-action/compare/v1.0.12...6004246f47ab62d32be025ce173b241cd84ac58e)

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

.github/workflows/ci.yml

@@ -178,7 +178,7 @@ jobs:
         if: "failure()"
       - name: Upload coverage
         if: "endsWith(matrix.testenv, '-cov')"
-        uses: codecov/codecov-action@v1.0.12
+        uses: codecov/codecov-action@v1.0.13
         with:
           name: "${{ matrix.testenv }}"