Update Cryptography requirement to at least 39.0.1 #459
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Older versions of Cryptography are vulnerable to CVE-2023-0286, which is due to the fact that earlier versions bundle a pre-compiled version of openssl that has a known vulnerability noted in https://www.openssl.org/news/secadv/20230207.txt and https://www.openssl.org/news/secadv/20221213.txt.
Previously, the cryptography package version was downloaded from pyopenssl, however it is best that we specify the version ourselfs.