don't fail ci if codecov fails, its not that important

Author: tamirse

.github/workflows/unit_tests.yml

@@ -33,4 +33,4 @@ jobs:
       - name: 'Upload coverage to Codecov'
         uses: codecov/codecov-action@v1
         with:
-          fail_ci_if_error: true
+          fail_ci_if_error: false