remove crypto<4 pin from depends check (Azure#31928)

Author: scbedd

eng/tox/tox.ini

@@ -340,7 +340,6 @@ setenv =
   PROXY_URL=http://localhost:5008
 deps =
   {[packaging]pkgs}
-  cryptography<4
 commands =
     python -m pip install {repository_root}/tools/azure-sdk-tools --no-deps
     python {repository_root}/eng/tox/sanitize_setup.py -t {tox_root}