Add get_verified_chain and get_unverified_chain for Python 3.13 (#11724)

Co-authored-by: Alex Waygood <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

stdlib/ssl.pyi

@@ -366,6 +366,9 @@ class SSLSocket(socket.socket):
     def recvmsg(self, *args: Never, **kwargs: Never) -> Never: ...  # type: ignore[override]
     def recvmsg_into(self, *args: Never, **kwargs: Never) -> Never: ...  # type: ignore[override]
     def sendmsg(self, *args: Never, **kwargs: Never) -> Never: ...  # type: ignore[override]
+    if sys.version_info >= (3, 13):
+        def get_verified_chain(self) -> list[bytes]: ...
+        def get_unverified_chain(self) -> list[bytes]: ...
 
 class TLSVersion(enum.IntEnum):
     MINIMUM_SUPPORTED: int
@@ -476,6 +479,9 @@ class SSLObject:
     def version(self) -> str | None: ...
     def get_channel_binding(self, cb_type: str = "tls-unique") -> bytes | None: ...
     def verify_client_post_handshake(self) -> None: ...
+    if sys.version_info >= (3, 13):
+        def get_verified_chain(self) -> list[bytes]: ...
+        def get_unverified_chain(self) -> list[bytes]: ...
 
 @final
 class MemoryBIO: