tests

Add initial support for license expression (PEP 639) #5744

Job	Run time
test (3.8, ubuntu-latest)	12s
collateral (diffcov)	5m 20s
test (3.8, windows-latest)	9s
test_cygwin (39, windows-latest)	13m 10s
collateral (docs)	2m 2s
test (3.13, ubuntu-latest)	16s
test (3.13, macos-latest)	17s
test (3.13, windows-latest)	10s
test (3.9, ubuntu-latest)	13s
test (3.10, ubuntu-latest)	14s
test (3.11, ubuntu-latest)	26s
test (3.12, ubuntu-latest)	25s
test (3.14, ubuntu-latest)	12s
test (pypy3.10, ubuntu-latest, stdlib)	9s
test (ubuntu-latest, 3.10, stdlib)	8s
test (3.8, macos-13)	24s
integration-test	0s
check	2s
release	0s
	23m 49s

Provide feedback