Lint

Bump vulture from 2.14 to 2.15 #1286

Job	Run time
build (3.13, windows-latest, pre-commit)	1m 19s
build (3.13, windows-latest, manual)	1m 27s
build (3.13, ubuntu-latest, pre-commit)	33s
build (3.13, ubuntu-latest, manual)	36s
build (3.13, ubuntu-latest, pre-push)	1m 18s
build (3.13, windows-latest, pre-push)	2m 30s
completion-lint	2s
	7m 45s

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