Bump codecov/codecov-action from v1.0.11 to v1.0.12

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from v1.0.11 to v1.0.12.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Commits](codecov/codecov-action@v1.0.11...07127fd)

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

Author: dependabot[bot]

.github/workflows/tests.yml

@@ -92,4 +92,4 @@ jobs:
 
       - name: Upload coverage report
         if: always() && matrix.session == 'tests'
-        uses: codecov/codecov-action@v1.0.11
+        uses: codecov/codecov-action@v1.0.12