Update Python version support.

[icemac]

• Drop support for Python 3.7, 3.8.
• Add support for Python 3.12, 3.13.
• Configuring for pure-python
• Update Python version support.

[coveralls]

Pull Request Test Coverage Report for Build 14622556987

Details

• 0 of 1 (0.0%) changed or added relevant line in 1 file are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.5%) to 95.443%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/grokcore/security/interfaces.py	0	1	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/grokcore/security/interfaces.py	1	85.0%

Totals
Change from base Build 14429315209:	-0.5%
Covered Lines:	323
Relevant Lines:	335

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💛 - Coveralls