fix: add support for babel>=2.14.0 and updated Locale.number_symbols format

[Alex-ley-scrub]

fixes #17

[mutricyl]

@snoopyjc would it be possible to merge this PR and release a new version of ssf ?

[Alex-ley-scrub]

@mutricyl I doubt we're getting a response since the repo has no commits in 6 years... 😞

But you can (and probably already do) just use your fork in your pyproject.toml JohanBekker@33a746f

This is what we do with our fork:

pyproject.toml

[project]
...
dependencies = [
    ...
    "ssf @ git+https://github.com/Scrub-AI/ssf.git@0.2.3",
    ...
]

mostly posting for anyone else who comes here and wants a quick fix