Test on 3.13 latest and move 3.13 into main group. Drop ubuntu-latest… #34

Job	Run time
pylint	12s
pre-commit	10s
test_on_old_Pythons (3.7)	5m 17s
test_on_old_Pythons (3.6)	15s
test_on_old_Pythons (3.5)	5m 13s
test_on_old_Pythons (2.7)	6m 44s
test_on_old_Pythons (3.8)	4m 32s
run_tests (3.9, ubuntu-24.04)	3m 58s
run_tests (3.10, macos-latest)	2m 27s
run_tests (3.11, ubuntu-24.04)	7s
run_tests (3.9, windows-latest)	14s
run_tests (3.11, windows-latest)	16s
run_tests (3.11, macos-latest)	12s
run_tests (3.10, ubuntu-24.04)	7s
run_tests (3.12, macos-latest)	11s
run_tests (3.9, macos-latest)	26s
run_tests (3.13, windows-latest)	14s
run_tests (3.13, ubuntu-24.04)	10s
run_tests (3.12, ubuntu-24.04)	3m 54s
run_tests (3.14.0-beta.4, macos-latest)	28s
run_tests (3.13, macos-latest)	1m 55s
run_tests (3.10, windows-latest)	13s
run_tests (3.12, windows-latest)	3m 56s
run_tests (3.14.0-beta.4, ubuntu-24.04)	20s
run_tests (3.14.0-beta.4, windows-latest)	57s
	42m 28s

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