Polish off #670

Author: A5rocks

newsfragments/670.bugfix.rst

@@ -0,0 +1 @@
+Update from deprecated pyOpenSSL APIs to non-deprecated cryptography APIs.

src/trustme/__init__.py

@@ -8,7 +8,7 @@
 from contextlib import contextmanager
 from enum import Enum
 from tempfile import NamedTemporaryFile
-from typing import TYPE_CHECKING, Generator, List, Optional, Union, cast
+from typing import TYPE_CHECKING, Generator, List, Optional, Union
 
 import idna
 from cryptography import x509