add type-checking to the second notebook

[yibeichan]

Hi, I added the type-checking to the second notebook & updated the conda env yml file with pydra==0.23.0a0 so that type-checking can work.
Let me know if anything else needs to be added.

[yibeichan]

I know.. the run has failed because I intentionally set something wrong...

# This usage is incorrect according to static type hints:
task1b = add(a="hello", b="world")
task1b()

[effigies]

You can mark cells as expected exception raising so they don't fail.

[yibeichan]

thank you @effigies ! adding :tags: [raises-exception] fixed the problem. now we have errors from the notebook 7_twolevel_glm_nilearn, I guess it's because we installed the latest pydra, and some of my old code is raising errors...

[yibeichan]

okay, one error from the second-level glm hasn't been fixed yet; we should expect all other notebooks to be error-free at this moment

[djarecka]

ok, thank you, I will just merge it now, so we can work on other things and come back to this issue later