tests

Explicit pass the Python path to pipx in CI step #6017

Job	Run time
test_cygwin (39, windows-latest)	1m 39s
test (3.9, ubuntu-latest)	5s
collateral (diffcov)	1m 56s
test (3.9, windows-latest)	1s
test (3.13, ubuntu-latest)	6s
collateral (docs)	1m 56s
test (3.13, macos-latest)	7s
test (3.13, windows-latest)	3s
test (3.10, ubuntu-latest)	6s
test (3.11, ubuntu-latest)	4s
test (3.12, ubuntu-latest)	5s
test (3.14, ubuntu-latest)	6s
test (pypy3.10, ubuntu-latest, stdlib)	6s
test (ubuntu-latest, 3.10, stdlib)	7s
integration-test	0s
check	2s
release	1s
	6m 30s

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