start testing on 3.13 #2613

Job	Run time
build (ubuntu-latest, 3.9)	3m 14s
build (ubuntu-latest, 3.13)	3m 29s
build (windows-latest, 3.9)	9m 6s
check_release	1m 35s
test_docs	36s
build (windows-latest, 3.13)	10m 2s
build (macos-latest, 3.9)	4m 51s
Test Lint	1m 7s
Test Minimum Versions	2m 41s
build (macos-latest, 3.13)	4m 46s
build (ubuntu-latest, pypy-3.9)	3m 1s
build (macos-latest, 3.10)	5m 0s
Test Prereleases	2m 33s
test_without_debugpy (ubuntu-latest, 3.9)	1m 53s
build (ubuntu-latest, 3.11)	3m 7s
build (ubuntu-latest, 3.12)	3m 20s
link_check	3m 24s
Make SDist	27s
Install from SDist and Test	1m 58s
coverage	6s
tests_check	4s
	1h 6m 20s

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