fix(orchestrator): use tmp dir when we create paras artifacts

[pepoviola]

Use tmp dir for export-genesis-state cmd.
Fix #1519
cc: @JoshOrndorff

[JoshOrndorff]

The core change looks good to me. Just out of curiosity, why was downgrading chai necessary?

[pepoviola]

The core change looks good to me. Just out of curiosity, why was downgrading chai necessary?

Thanks for the feedback @JoshOrndorff. The issue with chai was caused by the depedabot that bump the major version of chai and that version drop cjs support, so we need to adjust some parts of our code. I will make the change in a separate pr.

Thx!

[pepoviola]

ci cache here is causing troubles, I will close this one and re-open with a diff branch.
Thx!