Update utils.py - check for PurePath instead of Path

[tomandersen]

Should this check be for PurePath instead of Path? We had a crash when writing to S3 in django.

File "/usr/local/lib/python3.10/site-packages/storages/backends/s3boto3.py", line 596, in get_available_name
keellabs-django-1   |     name = clean_name(name)
keellabs-django-1   |   File "/usr/local/lib/python3.10/site-packages/storages/utils.py", line 47, in clean_name
keellabs-django-1   |     if name.endswith('/') and not clean_name.endswith('/'):
keellabs-django-1   | AttributeError: 'PurePosixPath' object has no attribute 'endswith'

See image here: https://docs.python.org/3/library/pathlib.html

NOTE - I am not a python / django expert, please look at this carefully.

[tomandersen]

Here they check and raise if not a str

https://github.com/boto/boto3/blob/develop/boto3/s3/transfer.py

[jschneier]

Thanks I failed to push to this branch but I've got you as the author in #1278, just added a test on top. Looks great.