Rename `default_features` to `default-features` #1121

Job	Run time
cargo-hack	1m 18s
check	57s
check-docs	55s
cargo-public-api-crates	51s
cargo-deny check (advisories)	22s
cargo-deny check (bans licenses sources)	23s
test-msrv	1m 39s
style	9s
test-versions (stable)	1m 31s
test-versions (beta)	1m 33s
test-versions (nightly)	1m 20s
	10m 58s

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