Use valid version of cryptography library.

dev-requirements.txt

@@ -13,7 +13,7 @@ cfgv==3.4.0; python_version >= '3.8'
 charset-normalizer==3.3.2; python_full_version >= '3.7.0'
 click==8.1.7; python_version >= '3.7'
 commonmark==0.9.1
-cryptography==43.0.0.dev1
+cryptography==42.0.3
 cytoolz==0.12.3; implementation_name == 'cpython'
 dataclassy==0.11.1; python_version >= '3.6'
 decorator==5.1.1; python_version >= '3.5'