docs: update version in README #503

Job	Run time
Build wasm	1m 54s
Run tests on macOS arm64 (Apple M1)	1m 6s
Run tests on Linux x86 (nightly, no default features)	50s
Run tests on Linux x86 (nightly)	50s
Run tests on Linux x86 (stable, no default features)	51s
Run tests on Linux armv7	3m 37s
Run tests on Linux x86 (stable)	53s
Run tests on Linux arm64	3m 50s
	13m 51s

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