crypto: use pycrytodomex, replace Crypto with Cryptodome (#38017)

mainly because Debian python-cryptodome package use pycrytodomex, which
is a library independent of the old PyCrypto, available under the
Cryptodome name.

setup.py

@@ -129,7 +129,7 @@ setup(name="authentic2",
           'Markdown>=2.1',
           'python-ldap',
           'django-filter>1,<2',
-          'pycryptodome',
+          'pycryptodomex',
           'django-mellon',
           'ldaptools',
           'jwcrypto>=0.3.1,<1',

src/authentic2/crypto.py

@@ -19,11 +19,11 @@ import hashlib
 import hmac
 import struct
 
-from Crypto.Cipher import AES
-from Crypto.Protocol.KDF import PBKDF2
-from Crypto.Hash import SHA256
-from Crypto.Hash import HMAC
-from Crypto import Random
+from Cryptodome.Cipher import AES
+from Cryptodome.Protocol.KDF import PBKDF2
+from Cryptodome.Hash import SHA256
+from Cryptodome.Hash import HMAC
+from Cryptodome import Random
 
 from django.utils.crypto import constant_time_compare
 from django.utils.encoding import force_bytes

tests/test_crypto.py

@@ -41,7 +41,7 @@ def test_exceptions():
 
 
 def test_padding():
-    from Crypto import Random
+    from Cryptodome import Random
 
     for i in range(1, 100):
         for j in range(2, 32):