Test failure on Windows.

[strue36]

test_read_graphql_file_with_invalid_file_raises_invalid_graphql_syntax_exception() checks for the file path in the expected exception message, but this gets escaped on Windows.

I don't think that this check is necessary and suggest removing it.

assert str(incorrect_schema_file) in str(exc)

[rafalp]

This assert verifies that error reporting names the faulty file. I'll rather keep it and fix it that remove it.