include python 3.13 in build #981

Job	Run time
Rustfmt	8s
docs	1m 34s
Rust unit tests (ubuntu-latest)	2m 35s
lint	1m 38s
Rust unit tests (macos-latest)	1m 25s
typecheck	1m 23s
Rust unit tests (windows-latest)	3m 28s
test (macos-latest, 3.9)	3m 41s
test (macos-latest, 3.10)	4m 15s
test (macos-latest, 3.11)	4m 45s
test (macos-latest, 3.12)	4m 41s
test (macos-latest, 3.13.0-alpha - 3.13)	4m 36s
test (ubuntu-latest, 3.9)	5m 31s
test (ubuntu-latest, 3.10)	5m 40s
test (ubuntu-latest, 3.11)	6m 17s
test (ubuntu-latest, 3.12)	8m 35s
test (ubuntu-latest, 3.13.0-alpha - 3.13)	8m 36s
test (windows-latest, 3.9)	8m 26s
test (windows-latest, 3.10)	9m 7s
test (windows-latest, 3.11)	9m 25s
test (windows-latest, 3.12)	12m 2s
test (windows-latest, 3.13.0-alpha - 3.13)	27m 11s
	2h 14m 59s

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