fix windows CI for kaleido unittests #192
Description
The following unittests no longer pass in the CI for windows-latest
test tests::test_save_eps ... ignored
test tests::test_save_pdf ... ok
test tests::test_save_svg ... ok
test tests::test_save_jpeg ... ok
test tests::test_save_png ... ok
test tests::test_save_webp ... ok
This PR #190 disables these tests for Windows OS. To find the issue and re-enable them.