Running `tutor config save` with an outdated version of pycryptodome was
failing with the following error:
Error: Missing configuration value: 'Crypto.PublicKey.RSA.RsaKey object' has no attribute 'dq'
This is because the "dq" attribute was only introduced in pycryptodome
3.17.0: https://www.pycryptodome.org/src/changelog#january-2023
To resolve this issue we bump the minimum requirements.
Close #962
