Bump version #476

Job	Run time
build (stable, serde, ubuntu-latest)	27s
build (stable, serde, macos-latest)	28s
build (stable, serde, windows-latest)	1m 14s
build (stable, base64, ubuntu-latest)	28s
build (stable, base64, macos-latest)	34s
build (stable, base64, windows-latest)	2m 35s
build (stable, default, ubuntu-latest)	29s
build (stable, default, macos-latest)	25s
build (stable, default, windows-latest)	2m 48s
build (nightly, serde, ubuntu-latest)	31s
build (nightly, serde, macos-latest)	37s
build (nightly, serde, windows-latest)	1m 16s
build (nightly, base64, ubuntu-latest)	34s
build (nightly, base64, macos-latest)	43s
build (nightly, base64, windows-latest)	1m 28s
build (nightly, simd_backend, ubuntu-latest)	32s
build (nightly, simd_backend, macos-latest)	41s
build (nightly, default, ubuntu-latest)	32s
build (nightly, default, macos-latest)	41s
build (nightly, default, windows-latest)	1m 19s
	18m 22s

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