NumPy 2.3.1 release

1. af8bb63 STY: Apply ruff/isort rule I001 by Dimitri Papadopoulos · 4 months ago
2. 8b0f975 TYP: Fill in the missing ``__all__`` exports by jorenham · 11 months ago
3. 7d4f488 MAINT: Adjustments after numpy._core rename by Mateusz Sokół · 1 year, 11 months ago
4. 4727fb1 Update numpy/setup.py by Mateusz Sokół · 2 years ago
5. 6643c0e MAINT: Create rec and char submodules by Mateusz Sokół · 2 years ago