1.7.3 breaks on hashlib.sha256() with Python 3.9, works ok with hashlib.new("sha256")

[schlenk]

Describe the bug

Using Python 3.9 and bandit 1.7.3 the code throws a traceback when trying to parse:

hashlib.sha256()

It works correctly with Python 3.8.

[tester]        ERROR   Bandit internal error running: hashlib on file src/oic\oic\__init__.py at line 1329: 'name'Traceback (most recent call last):
  File "c:\users\me\.virtualenvs\pyoidc_offical-l5_fcrz7\lib\site-packages\bandit\core\tester.py", line 53, in run_tests
    result = test(context)
  File "c:\users\me\.virtualenvs\pyoidc_offical-l5_fcrz7\lib\site-packages\bandit\plugins\hashlib_insecure_functions.py", line 115, in hashlib
    return _hashlib_func(context)
  File "c:\users\me\.virtualenvs\pyoidc_offical-l5_fcrz7\lib\site-packages\bandit\plugins\hashlib_insecure_functions.py", line 57, in _hashlib_func
    name = args[0] if args else keywords["name"]
KeyError: 'name'

Reproduction steps

1. Install Python 3.9
2. Install bandit 1.7.3
3. Create trivial file:

import hashlib
hashlib.sha256()

4. Run bandit and get a traceback

Expected behavior

No traceback. It should work with both hashlib.sha256 and hashlib.new("sha256").

Bandit version

1.7.3 (Default)

Python version

3.9

Additional context

No response

[ericwb]

Fixed with #834