Bump bytes from 1.6.1 to 1.7.0 #157

Job	Run time
set-image	1s
clippy	1m 33s
fmt	1m 3s
checks	1m 36s
bench-rust-nightly (bit-vec)	18m 15s
miri (bit-vec)	5h 33m 25s
bench-rust-nightly (bytes)	17m 7s
miri (bytes)	2m 58s
tests	2m 59s
bench-rust-nightly (generic-array)	17m 12s
miri (generic-array)	3m 2s
bench-rust-nightly (derive)	16m 54s
miri (arbitrary)	3m 35s
bench-rust-nightly (max-encoded-len)	16m 52s
build-linux-ubuntu-amd64	1m 19s
publish-dry-run	1m 37s
	7h 19m 28s

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