fix: resolve linting failures and add nested requests modules to __lazy_modules__

Author: hebaalazzeh

packages/google-auth/google/auth/_helpers.py

@@ -564,5 +564,5 @@ class HeapDummy(object):
     Inheriting from HeapDummy instead of built-in `object` ensures that Python's
     memory layout check passes when we swap bases to another heap-allocated class.
     """
-    pass
 
+    pass

packages/google-auth/google/auth/transport/requests.py

@@ -31,7 +31,15 @@
 # For more information, see:
 # https://docs.python.org/3.15/library/sys.html#sys.set_lazy_imports_filter
 # Older Python versions safely ignore this variable.
-__lazy_modules__: Set[str] = {"requests", "requests.adapters", "requests.exceptions"}
+__lazy_modules__: Set[str] = {
+    "requests",
+    "requests.adapters",
+    "requests.exceptions",
+    "requests.packages",
+    "requests.packages.urllib3",
+    "requests.packages.urllib3.util",
+    "requests.packages.urllib3.util.ssl_",
+}
 
 
 if importlib.util.find_spec("requests") is None:

packages/google-auth/google/auth/transport/urllib3.py

@@ -19,6 +19,7 @@
 
 import http.client as http_client
 import logging
+from typing import Set
 import warnings
 
 # Certifi is Mozilla's certificate bundle. Urllib3 needs a certificate bundle
@@ -51,8 +52,6 @@
     ) from caught_exc
 
 
-from typing import Set
-
 from google.auth import _helpers
 from google.auth import exceptions
 from google.auth import transport