Prepare 1.13.0 release #1180

Job	Run time
Checking fmt and docs	29s
Build with no-std	11s
Build and test (ubuntu-latest, nightly)	1m 12s
Check io_safety feature (ubuntu-latest)	9s
Build and test (ubuntu-latest, beta)	1m 13s
Check tokio02 feature	9s
Check io_safety feature (windows-latest)	11s
Build and test (ubuntu-latest, stable)	1m 12s
Check wasm targets (nightly)	29s
Build and test (windows-latest, nightly)	1m 10s
Check wasm targets (beta)	32s
Build and test (windows-latest, beta)	1m 11s
Check wasm targets (stable)	31s
Cross compile (i686-unknown-linux-gnu)	1m 12s
Build and test (windows-latest, stable)	1m 11s
Cross compile (powerpc-unknown-linux-gnu)	1m 10s
Build and test (macOS-latest, nightly)	1m 14s
Cross compile (powerpc64-unknown-linux-gnu)	1m 9s
Build and test (macOS-latest, beta)	1m 15s
Build and test (macOS-latest, stable)	1m 9s
Cross compile (mips-unknown-linux-gnu)	1m 3s
Cross compile (arm-linux-androideabi)	1m 25s
	19m 27s

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