Pin esmpy to anything but 8.1.0 since that particular one changes the CPU affinity

[valeriupredoi]

Description

See the issue and comment for more details, in a nutshell - for some reason esmf/esmpy=8.1.0 reduces cpu affinity to 0 when running esmvalcore; thanks to @SarahAlidoost for noticing this; 8.1.1 is fine but is yet to be solved for in the conda/mamba environment; 8.0.1 is fine too and it's what esmvaltool currently ingests in the environment

Closes #1208

Link to documentation:

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  Nope because the test docker container is prebuilt with esmpy=8.1.0 actually, but all else passes fine as it should be 👍

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[bouweandela]

Thanks!

[valeriupredoi]

cheers @bouweandela 🍺