Speedup ci: Only run tests on change #3308

Job	Run time
lint (x86_64-apple-darwin, macos-14)	37s
cross-check (armv7-unknown-linux-musleabihf, ubuntu-latest)	45s
lint (x86_64-unknown-linux-gnu, ubuntu-latest)	43s
Test changed-files	5s
cross-check (armv7-unknown-linux-gnueabihf, ubuntu-latest)	45s
pr-info	3s
lint (x86_64-pc-windows-msvc, windows-latest)	2m 58s
cross-check (aarch64-unknown-linux-musl, ubuntu-latest)	34s
cross-check (aarch64-unknown-linux-gnu, ubuntu-latest)	35s
cross-check (x86_64-unknown-linux-musl, ubuntu-latest)	45s
cross-check (aarch64-apple-darwin, macos-14)	35s
cross-check (aarch64-pc-windows-msvc, windows-latest)	3m 5s
test (x86_64-apple-darwin, macos-14)	3m 13s
test (x86_64-unknown-linux-gnu, ubuntu-latest)	2m 20s
test (x86_64-pc-windows-msvc, windows-latest)	59s
detect-targets-build	0s
detect-targets-android-check	0s
detect-targets-ubuntu-test	0s
detect-targets-alpine-test	0s
detect-targets-more-glibc-test	0s
detect-targets-nix-test	0s
release-dry-run	0s
Tests pass	1s
	18m 3s

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