[mattijn]

This PR updates the lock file

To make sure all tests pass I have to:

• pin narwhals below version 2.2, issue: Narwhals typing breakage after lock file update (narwhals 2.2 / 2.9) #3960
• pin pandas-stubs below version 2.3.3, issue with pandas-stubs ≥ 2.3.3 some mytype errors appear #3961
• pin mypy below version 1.18, issue: with mypy ≥ 1.18 some mytype errors appear #3962

[MarcoGorelli]

hi @mattijn - is this just for internal typing purposes?

if so, i'd really advise against setting an upper bound on a required dependency, this risks causing further issues

you may have seen this already, but i think it's argued quite well here: https://iscinumpy.dev/post/bound-version-constraints/

[mattijn]

Thanks for commenting. We have no intention of releasing an altair version with an upper bound on narwhals, but since the test suite currently fails with higher versions, I’ve temporarily added this mitigation measure while waiting for it to be resolved upstream. If you have a better suggestion, I’m completely open to it.

[MarcoGorelli]

makes sense, thanks - will treat addressing this with priority then 👍