Allow path objects for data-files #1019

Job	Run time
collateral (diffcov)	1m 3s
test (3.8, ubuntu-latest)	40s
collateral (docs)	33s
ci_setuptools (3.10, ubuntu-latest)	3m 49s
test (3.8, macos-latest)	1m 22s
test_cygwin (39, windows-latest)	3m 30s
test_msys2_mingw (mingw64, x86_64, gcc, g++)	2m 9s
test_msys2_mingw (mingw32, i686, gcc, g++)	2m 45s
test (3.8, windows-latest)	1m 43s
test_msys2_mingw (ucrt64, ucrt-x86_64, gcc, g++)	2m 11s
test (3.12, ubuntu-latest)	47s
test_msys2_mingw (clang64, clang-x86_64, clang, clang++)	2m 26s
test (3.12, macos-latest)	55s
test (3.12, windows-latest)	1m 48s
test (3.9, ubuntu-latest)	42s
test (3.10, ubuntu-latest)	45s
test (3.11, ubuntu-latest)	39s
test (pypy3.10, ubuntu-latest)	1m 34s
check	2s
release	0s
	29m 23s

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