Error when running az container logs ('ascii' codec can't encode character)

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

## Describe the bug

**Command Name**
`az container logs`

**Errors:**
```
'ascii' codec can't encode character '\xf6' in position 11556: ordinal not in range(128)
Traceback (most recent call last):
python3.6/site-packages/knack/cli.py, ln 215, in invoke
cmd_result = self.invocation.execute(args)
cli/core/commands/__init__.py, ln 654, in execute
raise ex
cli/core/commands/__init__.py, ln 718, in _run_jobs_serially
results.append(self._run_job(expanded_arg, cmd_copy))
cli/core/commands/__init__.py, ln 711, in _run_job
six.reraise(*sys.exc_info())
...
cli/core/commands/__init__.py, ln 325, in __call__
return self.handler(*args, **kwargs)
azure/cli/core/__init__.py, ln 784, in default_command_handler
return op(**command_args)
cli/command_modules/container/custom.py, ln 552, in container_logs
print(log.content)
UnicodeEncodeError: 'ascii' codec can't encode character '\xf6' in position 11556: ordinal not in range(128)
```

## 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 container logs --resource-group {} --name {}`

## Expected Behavior

## Environment Summary
```
Linux-5.4.0-45-generic-x86_64-with-debian-bullseye-sid
Python 3.6.10
Installer: DEB

azure-cli 2.12.1

```
## Additional Context