Updated the package to use pytest instead of nose2#81

bjoaofelipe merged 1 commit intomasterKrishnaswamyLab/graphtools:masterfrom

76-need-to-stop-using-nose-for-testing-in-order-to-update-to-python-312KrishnaswamyLab/graphtools:76-need-to-stop-using-nose-for-testing-in-order-to-update-to-python-312Copy head branch name to clipboard