Lint

Add switchable HTTP transports #1233

Job	Run time
build (3.13, windows-latest, manual)	1m 8s
build (3.13, windows-latest, pre-push)	2m 16s
build (3.13, ubuntu-latest, pre-commit)	35s
build (3.13, ubuntu-latest, pre-push)	1m 9s
build (3.13, ubuntu-latest, manual)	36s
build (3.13, windows-latest, pre-commit)	1m 21s
completion-lint	2s
	7m 7s

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