[18.0][IMP] storage_backend_s3: cryptography library issue

[CRogos]

Addresses: https://github.com/OCA/storage/actions/runs/24678824138/job/72170222070

2026-04-21 13:59:50,235 313 CRITICAL ? odoo.modules.module: Couldn't load module base 
2026-04-21 13:59:50,237 313 ERROR ? odoo.service.server: Failed to load server-wide module `base`. 
Traceback (most recent call last):
  File "/opt/odoo/odoo/service/server.py", line 1312, in load_server_wide_modules
    odoo.modules.module.load_openerp_module(m)
  File "/opt/odoo/odoo/modules/module.py", line 384, in load_openerp_module
    __import__(qualname)
  File "/opt/odoo/odoo/addons/base/__init__.py", line 5, in <module>
    from . import models
  File "/opt/odoo/odoo/addons/base/models/__init__.py", line 22, in <module>
    from . import ir_mail_server
  File "/opt/odoo/odoo/addons/base/models/ir_mail_server.py", line 15, in <module>
    import OpenSSL
  File "/opt/odoo-venv/lib/python3.10/site-packages/OpenSSL/__init__.py", line 8, in <module>
    from OpenSSL import crypto, SSL
  File "/opt/odoo-venv/lib/python3.10/site-packages/OpenSSL/crypto.py", line 1579, in <module>
    class X509StoreFlags(object):
  File "/opt/odoo-venv/lib/python3.10/site-packages/OpenSSL/crypto.py", line 1598, in X509StoreFlags
    NOTIFY_POLICY = _lib.X509_V_FLAG_NOTIFY_POLICY
AttributeError: module 'lib' has no attribute 'X509_V_FLAG_NOTIFY_POLICY'

[CRogos]

@sbidoul could you have a look on this? The tests workflow is failing in this repository due to some library dependency issues related to cryptography.

This PR fixes the problem, but I am sure this is not the correct solution and I remember you as a python library pro :) .

Thank you in advance.