chore: move to py313 as default #148

Job	Run time
tests	6m 21s
coverage	6m 7s
env (windows-latest)	1m 53s
env (macos-latest)	46s
env (ubuntu-latest)	19s
workflow-coverage / dynamo (float32)	14m 21s
workflow-coverage / overall (float32)	2m 14s
workflow-coverage / overall (float64)	2m 22s
workflow-coverage / slow (float32)	9m 19s
workflow-docs / docstests & sphinx-build - python-3.13, torch-2.5.1	5m 59s
workflow-coverage / slow (float64)	11m 30s
workflow-mypy / python-3.13, torch-2.5.1	6m 43s
workflow-tests / python-3.10, torch-2.1.2	1m 44s
workflow-tutorials / python-3.12, torch-2.5.1	13m 11s
workflow-tests / python-3.10, torch-2.5.1	1m 50s
workflow-tests / python-3.13, torch-2.5.1	6m 21s
workflow-coverage / report	52s
collector	1s
	1h 31m 53s

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