Bump to Miniforge 24.7.1-2 and Python 3.12

[jaimergp]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

Noticed we were still on 23.3 and Python 3.10, which means the CI needs to bump it to Python 3.12 resulting in unnecessary churn.

[beckermr]

Should we go ahead and add the micromamba install here too? I am also OK with another PR.

cc @isuruf

[jaimergp]

Yea, that's #288

[jakirkham]

Thanks all! 🙏