WEB: Update to jupyterlite==0.1.0b12

[jtpio]

Update to the latest jupyterlite release to bring some more bug fixes and improvements.

This should help fix an issue with the current repl failing to load

• closes #xxxx (Replace xxxx with the Github issue number)
• Tests added and passed if fixing a bug or adding a new feature
• All code checks passed.
• Added type annotations to new arguments/methods/functions.
• Added an entry in the latest doc/source/whatsnew/vX.X.X.rst file if fixing a bug or adding a new feature.

[jtpio]

Thanks @jorisvandenbossche for reporting the issue today.

I tried the built archive locally downloaded from https://github.com/pandas-dev/pandas/actions/runs/2964426541, and it seems to be working well with the update:

[datapythonista]

Thanks @jtpio, lgtm.

Btw, would it be easy to show a spinner or even the word Loading... while the webassembly binary is being downloaded and loaded? I think it'd make the user experience much nicer, since this can take several seconds to be available.

[mroeschke]

Thanks @jtpio. Agreed, a loading indicator would be a nicer user experience (to set expectation of the activity in the background)

[jtpio]

Thanks all.

a loading indicator

Yes that's a good point and it is currently tracked this in jupyterlite/jupyterlite#619, which could be applied to all applications (lab, notebook, repl).