Release 0.12 #31837

Job	Run time
build (windows-latest)	6m 37s
build (ubuntu-latest)	3m 12s
check-bevy-internal-imports	4s
build (macos-latest)	7m 1s
check-doc	10m 37s
check-missing-examples-in-docs	28s
ci	3m 0s
miri	8m 30s
run-examples-on-windows-dx12	23m 15s
check-missing-features-in-docs	54s
markdownlint	1m 39s
check-compiles	8m 10s
msrv	1m 28s
build-wasm	2m 55s
	1h 17m 50s

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