Revert "Update cryptography requirement from ~=37.0.2 to ~=37.0.3"
Created by: wouterdb
Reverts inmanta/openstack#388
37.0.3 was yanked as described here: https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst
Created by: wouterdb
Reverts inmanta/openstack#388
37.0.3 was yanked as described here: https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst