chore: release 0.9.0 #5628

Job	Run time
doctest	1m 12s
wasm-unknown	47s
check no_std	15s
clippy	35s
docs	59s
feature-checks	3m 45s
fmt	11s
test ubuntu-latest stable --no-default-features	1m 27s
wasm-wasi	1m 14s
test ubuntu-latest stable	1m 48s
test ubuntu-latest stable --all-features	2m 16s
test ubuntu-latest nightly --no-default-features	1m 11s
test ubuntu-latest nightly	1m 22s
test ubuntu-latest nightly --all-features	2m 18s
test ubuntu-latest 1.81 --no-default-features	33s
test ubuntu-latest 1.81	49s
test windows-latest stable --no-default-features	4m 39s
test windows-latest stable	4m 0s
test windows-latest stable --all-features	6m 7s
test windows-latest nightly --no-default-features	3m 14s
test windows-latest nightly	3m 21s
test windows-latest nightly --all-features	4m 51s
test windows-latest 1.81 --no-default-features	2m 5s
deny / cargo deny check	24s
test windows-latest 1.81	2m 28s
ci success	4s
	51m 55s

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