[Dependencies] Upgrade Python version to 3.12 and removed pinning for setuptools

[gmarciani]

Description of changes

• Removed version pinning for setuptools - cherry-picked from Revert "Pin setuptools version to be less than 70.0.0" #6456
• Upgrade Python version from 3.9 to 3.12 in PC Lambda Layer -- cherry-picked from Reapply "Upgrade Lambda Runtime for Pcluster Lambda Layer" #6455
• Integ Test: Upgrade NodeJS version from 16.19.0 to 18.20.3 in PC Lambda Layer -- cherry-picked from Reapply "Upgrade Lambda Runtime for Pcluster Lambda Layer" #6455
• Integ Test: Pin jsonschema to 4.17.3 -- cherry-picked from Reapply "Pin jsonschema for Lambda Layer to version 4.17.3" #6460
• Updated changelog entries for 3.11.1

Tests

Tested in the original PR.

References

• Link to impacted open issues.
• Link to related PRs in other packages (i.e. cookbook, node).
• Link to documentation useful to understand the changes.

Checklist

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[hanwen-pcluste]

Minor, we did not document CLI Python dependencies upgrade in ChangeLog. So this line is optional

[gmarciani]

I think it's worth it to document these dependencies because:

1. Changing the PC Lambda Layer runtime is equivalent to making pcluster compatible with a newer version of Python. When old Lambda runtimes are used, users may receive warnings; this upgrade may solve these warnings and it's useful to keep track of this improvement.
2. setuptools: this package affects the pcluster installation, so if the user faces issues in installing pcluster it may also be because of changes in the new version of setuptools.