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

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: hebaalazzeh

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

@@ -228,7 +228,7 @@ def __call__(
             raise new_exc from caught_exc
 
 
-class _MutualTlsAdapter(_helpers.HeapDummy, metaclass=_LazyBasesMeta):
+class _MutualTlsAdapter(_HTTPAdapterBase, metaclass=_LazyBasesMeta):
     """
     A TransportAdapter that enables mutual TLS.