Third-party stubs: import from collections.abc where possible (#7637)

stubs/cryptography/cryptography/hazmat/primitives/serialization/pkcs7.pyi

@@ -1,5 +1,6 @@
+from collections.abc import Iterable
 from enum import Enum
-from typing import Any, Iterable
+from typing import Any
 
 from cryptography.hazmat.primitives.asymmetric.ec import EllipticCurvePrivateKey
 from cryptography.hazmat.primitives.asymmetric.rsa import RSAPrivateKey

stubs/cryptography/cryptography/x509/__init__.pyi

@@ -1,9 +1,10 @@
 import datetime
 from _typeshed import Self
 from abc import ABCMeta, abstractmethod
+from collections.abc import Generator, Iterable, Sequence
 from enum import Enum
 from ipaddress import IPv4Address, IPv4Network, IPv6Address, IPv6Network
-from typing import Any, ClassVar, Generator, Generic, Iterable, Sequence, TypeVar
+from typing import Any, ClassVar, Generic, TypeVar
 
 from cryptography.hazmat.backends.interfaces import X509Backend
 from cryptography.hazmat.primitives.asymmetric.dsa import DSAPrivateKey, DSAPublicKey