test_from_dict_bad_private_key breaks with cryptography 45.0.1

[mweinelt]

With cryptography>45 the following test breaks:

google-auth> ________________________ test_from_dict_bad_private_key ________________________
google-auth> 
google-auth>     def test_from_dict_bad_private_key():
google-auth>         info = SERVICE_ACCOUNT_INFO.copy()
google-auth>         info["private_key"] = "garbage"
google-auth>     
google-auth>         with pytest.raises(ValueError) as excinfo:
google-auth>             _service_account_info.from_dict(info)
google-auth>     
google-auth> >       assert excinfo.match(r"key")
google-auth> E       AssertionError: Regex pattern did not match.
google-auth> E        Regex: 'key'
google-auth> E        Input: 'Unable to load PEM file. See https://cryptography.io/en/latest/faq/#why-can-t-i-import-my-pem-file for more details. MalformedFraming'
google-auth> 
google-auth> tests/test__service_account_info.py:56: AssertionError

https://cryptography.io/en/latest/faq/#why-can-t-i-import-my-pem-file

Environment details

• OS: Linux (NixOS Unstable)
• Python version: 3.13
• pip version: n/a
• google-auth version: 2.40.1

Steps to reproduce

1. Update cryptography to 45.0.1
2. Run the test suite