formula: set CMAKE_PROGRAM_PATH to use shims #31175

Job	Run time
syntax	1m 14s
tap syntax	7m 14s
cask audit	2m 30s
formula audit	5m 12s
test default formula (Ubuntu 22.04)	1m 40s
test default formula (Ubuntu 20.04)	3m 5s
tests (online)	5m 14s
test default formula (macOS 13 x86_64)	4m 24s
tests (generic OS)	2m 51s
update-test (Ubuntu)	21s
tests (Ubuntu 24.04)	3m 24s
test default formula (macOS 15 arm64)	1m 27s
vendored gems	43s
update-test (macOS)	36s
tests (Ubuntu 22.04)	3m 5s
tests (Ubuntu 20.04)	3m 59s
tests (macOS 13 x86_64)	10m 4s
tests (macOS 15 arm64)	4m 45s
	1h 1m 48s

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