ci: run PR coverage only on macos arm #9221

Job	Run time
fmt	22s
semver-checks	2m 45s
check-msrv	12m 10s
python${{ matrix.python-version }}-${{ matrix.platform.python-architecture }} ${{ matrix.platform.os }} rust-${{ matrix.rust }}	0s
clippy/aarch64-apple-darwin/stable	9m 9s
careful	0s
clippy/x86_64-unknown-linux-gnu/stable	14m 2s
coverage macos-14	8m 0s
docsrs	0s
clippy/powerpc64le-unknown-linux-gnu/stable	13m 10s
clippy/s390x-unknown-linux-gnu/stable	13m 10s
clippy/wasm32-wasi/stable	12m 59s
test-debug	11m 16s
valgrind	0s
clippy/x86_64-pc-windows-msvc/stable	18m 38s
clippy/i686-pc-windows-msvc/stable	18m 12s
check-feature-powerset	0s
clippy/x86_64-unknown-linux-gnu/beta	11m 27s
emscripten	0s
test-cross-compilation ${{ matrix.os }} -> ${{ matrix.target }}	0s
test-version-limits	0s
test-cross-compilation-windows	0s
python3.12-x64 macos-13 rust-stable / build	9m 37s
python3.12-x64 ubuntu-latest rust-stable / build	8m 11s
python3.12-x64 windows-latest rust-stable / build	12m 39s
python3.12-x86 windows-latest rust-stable / build	12m 58s
python3.12-arm64 macos-14 rust-stable / build	5m 10s
python3.12-x64 ubuntu-latest rust-nightly / build	7m 58s
conclusion	1s
	3h 21m 54s

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