Problem with az on macOS: TypeError: 'module' object is not callable

### **This is autogenerated. Please review and update as needed.**

## Describe the bug

**Command Name**
`az login`

**Errors:**
```
The command failed with an unexpected error. Here is the traceback:
'module' object is not callable
Traceback (most recent call last):
File "/usr/local/Cellar/azure-cli/2.27.1/libexec/lib/python3.9/site-packages/knack/cli.py", line 231, in invoke
cmd_result = self.invocation.execute(args)
File "/usr/local/Cellar/azure-cli/2.27.1/libexec/lib/python3.9/site-packages/azure/cli/core/commands/__init__.py", line 657, in execute
raise ex
File "/usr/local/Cellar/azure-cli/2.27.1/libexec/lib/python3.9/site-packages/azure/cli/core/commands/__init__.py", line 720, in _run_jobs_serially
results.append(self._run_job(expanded_arg, cmd_copy))
File "/usr/local/Cellar/azure-cli/2.27.1/libexec/lib/python3.9/site-packages/azure/cli/core/commands/__init__.py", line 691, in _run_job
result = cmd_copy(params)
File "/usr/local/Cellar/azure-cli/2.27.1/libexec/lib/python3.9/site-packages/azure/cli/core/commands/__init__.py", line 328, in __call__
return self.handler(*args, **kwargs)
File "/usr/local/Cellar/azure-cli/2.27.1/libexec/lib/python3.9/site-packages/azure/cli/core/commands/command_operation.py", line 121, in handler
return op(**command_args)
File "/usr/local/Cellar/azure-cli/2.27.1/libexec/lib/python3.9/site-packages/azure/cli/command_modules/profile/custom.py", line 145, in login
password = prompt_pass('Password: ')
File "/usr/local/Cellar/azure-cli/2.27.1/libexec/lib/python3.9/site-packages/knack/prompting.py", line 58, in prompt_pass
password = getpass.getpass(msg)
TypeError: 'module' object is not callable

```

## To Reproduce:
Steps to reproduce the behavior. Note that argument values have been redacted, as they may contain sensitive information.

- _Put any pre-requisite steps here..._
- `az login --service-principal --username {} --tenant {}`

## Expected Behavior

## Environment Summary
```
macOS-11.4-x86_64-i386-64bit
Python 3.9.6
Installer: HOMEBREW

azure-cli 2.27.1

```
## Additional Context