ci: do not limit feature powerset check by depth #4296

Job	Run time
test ubuntu-latest stable --no-default-features	1m 14s
test ubuntu-latest stable	1m 22s
wasm-unknown	42s
doctest	1m 11s
test ubuntu-latest stable --all-features	2m 15s
wasm-wasi	1m 10s
test ubuntu-latest nightly --no-default-features	1m 18s
check no_std	17s
test ubuntu-latest nightly	1m 26s
clippy	40s
test ubuntu-latest nightly --all-features	2m 4s
test ubuntu-latest 1.79 --no-default-features	47s
docs	57s
test ubuntu-latest 1.79	47s
feature-checks	3m 41s
test windows-latest stable --no-default-features	3m 7s
test windows-latest stable	4m 51s
feature-checks-full	3m 23s
cfg-check	23s
test windows-latest stable --all-features	6m 36s
test windows-latest nightly --no-default-features	4m 27s
fmt	12s
test windows-latest nightly	3m 52s
test windows-latest nightly --all-features	5m 52s
test windows-latest 1.79 --no-default-features	3m 11s
test windows-latest 1.79	3m 28s
	59m 13s

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