Fix hashing for python 3.9
_The documentation is not available anymore as the PR was closed or merged._ What do you think @albertvillanova ?
In python 3.9, pickle hashes the `glob_ids` dictionary in addition to the `globs` of a function.

Therefore the test at `tests/test_fingerprint.py::RecurseDumpTest::test_recurse_dump_for_function_with_shuffled_globals` is currently failing for python 3.9

To make hashing deterministic when the globals are not in the same order, we also need to make the order of `glob_ids` deterministic.

Right now we don't have a CI to test python 3.9 but we should definitely have one. For this PR in particular I ran the tests locally using python 3.9 and they're passing now.

Fix https://github.com/huggingface/datasets/issues/4506