Bump version to 21.1.3 #4277

Job	Run time
cackle	1m 14s
cargo-deny (advisories)	51s
build-and-test (msrv, 20, ubuntu-latest, wasm32-unknown-unknown, false)	9m 9s
cargo-deny (bans licenses sources)	43s
check-git-rev-deps	17s
build-and-test (msrv, 20, ubuntu-latest-16-cores, x86_64-unknown-linux-gnu, true)	19m 48s
fmt	15s
build-and-test (msrv, 21, ubuntu-latest, wasm32-unknown-unknown, false)	9m 24s
semver-checks	2m 10s
build-and-test (msrv, 21, ubuntu-latest-16-cores, x86_64-unknown-linux-gnu, true)	20m 38s
build-and-test (latest, 20, ubuntu-latest, wasm32-unknown-unknown, false)	10m 57s
build-and-test (latest, 20, ubuntu-latest-16-cores, x86_64-unknown-linux-gnu, true)	18m 14s
build-and-test (latest, 21, ubuntu-latest, wasm32-unknown-unknown, false)	8m 47s
build-and-test (latest, 21, ubuntu-latest-16-cores, x86_64-unknown-linux-gnu, true)	18m 13s
publish-dry-run (ubuntu-latest, x86_64-unknown-linux-gnu) / publish-dry-run / publish-dry-run	45m 46s
publish-dry-run (ubuntu-latest, wasm32-unknown-unknown) / publish-dry-run / publish-dry-run	45m 36s
complete	1s
	3h 32m 3s

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