Merge bitcoin/bitcoin#30952: test: Use shell builtins in run_command … #333

Job	Run time
Win64 native, VS 2022	2h 11m 14s
test each commit	0s
ASan + LSan + UBSan + integer, no depends, USDT	1h 2m 33s
macOS 14 native, arm64, no depends, sqlite only, gui	23m 45s
	3h 37m 32s

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