deps: update dependency google.auth to v2.40.2 (GoogleCloudPlatform#3328)

Author: renovate-bot

samples/python/django/requirements.txt

@@ -2,6 +2,6 @@ psycopg-binary==3.2.9
 pytz==2025.2
 Django==5.2.1
 google==3.0.0
-google.auth==2.40.1
+google.auth==2.40.2
 testcontainers==4.10.0
 requests==2.32.3