chore: make clippy happy #4217

Job	Run time
check no_std	27s
check	24s
check no_std optimism,kzg-rs	30s
check serde	27s
clippy	1m 29s
test stable --no-default-features	59s
check std	23s
test stable	1m 8s
test stable --all-features	1m 37s
docs	1m 22s
test beta --no-default-features	54s
fmt	12s
test beta	55s
test beta --all-features	1m 45s
TyposCheck	7s
test nightly --no-default-features	48s
test nightly	43s
test nightly --all-features	1m 23s
	15m 33s

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