Remove failure in case of failed upload to codecov.io

Author: Mec-iS

.github/workflows/coverage.yml

@@ -41,4 +41,4 @@ jobs:
       - name: Upload to codecov.io
         uses: codecov/codecov-action@v2
         with:
-          fail_ci_if_error:     true
+          fail_ci_if_error: false