Fix imas loader test due to new imas-python tag

[MateoBell]

New imas-python 2.1.0 release disabled implicit conversion between major DD versions #82 which broke imas loader test (change from warning to RuntimeError).

Updated imas-python requirement and fixed the test.

[Nush395]

2.1.0 isn't released from what I can tell at https://github.com/iterorganization/IMAS-Python. Is this a private version that you are using?

[MateoBell]

I think there is just this tag for now https://github.com/iterorganization/IMAS-Python/releases/tag/2.1.0-post1. It triggered a version change for the version use in the pipeline I guess, gave failures when I committed on #1630

[Nush395]

Ah interesting, we need to import the library but I think there is a small issue with the release that prevents our tests from running without imas-core that I've raised iterorganization/IMAS-Python#88.

For now I'm proposing restricting to use 2.0.1, is that suitable for your use case?

[MateoBell]

Yes it perfectly fine for me I think every feature should work fine with 2.0.1 for now !
I was thinking about restricting it to 2.0.1 as well to fix the issue, and can upgrade once this issue is fixed.

[Nush395]

Yes it perfectly fine for me I think every feature should work fine with 2.0.1 for now ! I was thinking about restricting it to 2.0.1 as well to fix the issue, and can upgrade once this issue is fixed.

Awesome, thanks Mateo :)

[Nush395]

Hey Mateo, sorry for the wait on this. Just an update, we're looking to add imas_core to our deps so should be able to bring this in soon.