chore: prepare v1.7.0 #693

Job	Run time
loom	2m 16s
minrust	2m 14s
cross (i686-unknown-linux-gnu)	39s
miri	11m 22s
cross (armv7-unknown-linux-gnueabihf)	32s
nightly	3m 25s
cross (powerpc-unknown-linux-gnu)	33s
rustfmt	13s
cross (powerpc64-unknown-linux-gnu)	38s
stable (ubuntu-latest)	1m 18s
cross (wasm32-unknown-unknown)	13s
tsan	2m 41s
stable (macos-latest)	1m 24s
stable (windows-latest)	2m 7s
Publish Documentation	2m 23s
	31m 58s

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