Use proper cryptography dependency version.

requirements.txt

@@ -24,7 +24,7 @@ charset-normalizer==3.3.2; python_full_version >= '3.7.0'
 click==8.1.7; python_version >= '3.7'
 coincurve==18.0.0; python_version >= '3.7'
 colorama==0.4.6; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6'
-cryptography==43.0.0.dev1; python_version >= '3.7'
+cryptography==42.0.5; python_version >= '3.7'
 cytoolz==0.12.3; implementation_name == 'cpython'
 dataclassy==0.11.1; python_version >= '3.6'
 decorator==5.1.1; python_version >= '3.5'