BUG: Github actions - provision-with-micromamba deprecated

[buddejul]

provision-with-micromamba is deprecated, see https://github.com/mamba-org/provision-with-micromamba.

When I tried to set up the workflow in https://github.com/buddejul/wangrep/pull/13 I got a deprecation warning followed by an error (see screenshots below). I think this might be specific to python 3.12, either way it is recommended to use https://github.com/mamba-org/setup-micromamba.

Sorry this is not super specific. I can try to replicate this with a minimal setup sometime later if that's helpful.