Need to investigate some sign-in error during test automation

[rayluo]

I happen to notice 3+ such error message in our test automation logs:

AADSTS50053: The account is locked, you've tried to sign in too many times with an incorrect user ID or password.

For example, this one. While this is not an issue to this MSAL Python library, we might want to investigate to see whether our testing account is still up-to-date.

UPDATE at 7-21: Same error messages can still be found in our latest test automation logs, such as this one.