Update setup.py

Need v42.0.0 or later of Cryptography as this restored the SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER constant which is required for possible fix per cherrypy/cheroot#245

setup.py

@@ -96,7 +96,7 @@ def find_meta(meta):
         packages=find_packages(where="src"),
         package_dir={"": "src"},
         install_requires=[
-            "cryptography>=41.0.3,<42",
+            "cryptography>=42.0.0",
         ],
         extras_require={
             "test": ["flaky", "pretend", "pytest>=3.0.1"],