audit: check for Python-wide site-package usage #25769

Job	Run time
syntax	1m 12s
docker	4m 50s
tap syntax	8m 24s
formula audit	6m 15s
cask audit	2m 41s
vendored gems	46s
test default formula (Ubuntu 22.04)	4m 24s
test default formula (Ubuntu 20.04)	5m 22s
tests (online)	6m 0s
update-test (Ubuntu 22.04)	1m 7s
test default formula (macOS 13 x86_64)	2m 59s
tests (generic OS)	5m 42s
update-test (macOS 13)	51s
test default formula (macOS 14 arm64)	1m 27s
tests (Ubuntu 22.04)	5m 51s
tests (Ubuntu 20.04)	5m 59s
tests (macOS 13 x86_64)	5m 57s
tests (macOS 14 arm64)	5m 55s
	1h 15m 42s

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