comparison-syntax-warning

[lchlnwlls]

As of Python 3.8, using is and is not with constant literals will produce a SyntaxWarning.

thumbor-1        | /usr/lib/python3.10/site-packages/tc_aws/loaders/s3_loader.py:118: SyntaxWarning: "is not" with a literal. Did you mean "!="?
thumbor-1        |   return '/'.join([root_path, path]) if root_path is not '' else path

[Bladrak]

Can you rebase? CI should now be fixed.