tests

Don't emit warning for explicitly included data files #5994

Job	Run time
test_cygwin (39, windows-latest)	2m 15s
collateral (diffcov)	12s
test (3.9, ubuntu-latest)	11s
collateral (docs)	10s
test (3.9, windows-latest)	7s
test (3.13, ubuntu-latest)	10s
test (3.13, macos-latest)	15s
test (3.13, windows-latest)	6s
test (3.10, ubuntu-latest)	7s
test (3.11, ubuntu-latest)	7s
test (3.12, ubuntu-latest)	7s
test (3.14, ubuntu-latest)	10s
test (pypy3.10, ubuntu-latest, stdlib)	8s
test (ubuntu-latest, 3.10, stdlib)	14s
integration-test	0s
check	3s
release	1s
	4m 23s

Provide feedback