Merge platform/external/python/google-auth-library-python v2.3.3 am: 8c673285f7

Original change: https://android-review.googlesource.com/c/platform/external/python/google-auth-library-python/+/1930534

Change-Id: I63201633a4b26c75d30d22e9bc937c3c2ca7a7d5