Fix #3278 - Boost temporary directories cleanup in tests #3909

Job	Run time
tox env type on ubuntu-latest	47s
test 3.12 on ubuntu-latest	4m 29s
tox env type on windows-latest	1m 13s
test 3.12 on windows-latest	11m 57s
tox env dev on ubuntu-latest	32s
test 3.12 on macos-latest	4m 45s
tox env dev on windows-latest	1m 10s
test 3.11 on ubuntu-latest	3m 3s
tox env docs on ubuntu-latest	2m 34s
test 3.11 on windows-latest	12m 27s
tox env docs on windows-latest	5m 11s
test 3.11 on macos-latest	3m 54s
tox env pkg_meta on ubuntu-latest	24s
test 3.10 on ubuntu-latest	3m 49s
test 3.10 on windows-latest	8m 51s
test 3.10 on macos-latest	3m 53s
test 3.9 on ubuntu-latest	3m 28s
test 3.9 on windows-latest	9m 41s
test 3.9 on macos-latest	4m 5s
test 3.8 on ubuntu-latest	3m 14s
test 3.8 on windows-latest	6m 54s
test 3.8 on macos-latest	4m 35s
	1h 40m 56s

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