chore: prepare v1.5.0 #474

Job	Run time
rustfmt	15s
nightly	4m 39s
loom	3m 22s
cross (i686-unknown-linux-gnu)	2m 20s
cross (armv7-unknown-linux-gnueabihf)	2m 7s
cross (powerpc-unknown-linux-gnu)	2m 22s
cross (powerpc64-unknown-linux-gnu)	2m 16s
cross (wasm32-unknown-unknown)	23s
minrust	2m 57s
miri	10m 22s
stable (ubuntu-latest)	2m 33s
stable (macos-latest)	3m 38s
stable (windows-latest)	5m 0s
tsan	3m 45s
Publish Documentation	2m 41s
	48m 40s

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