Update simd-json to make serenity compile again #4287

Job	Run time
Test (macOS)	4m 21s
MSRV	3m 20s
Test (nightly)	3m 46s
Build docs	3m 22s
Test (stable)	1m 20s
Examples	3m 25s
Test (beta)	1m 52s
Check minimal versions	1m 34s
Test (Windows)	6m 10s
Test (native-tls)	6m 49s
Test (no default features)	1m 25s
Test (no cache)	5m 35s
Test (no gateway)	3m 0s
Test (time)	56s
Test (unstable Discord API features)	2m 4s
Test (simd_json)	1m 30s
Test (chrono, chrono)	54s
Test (builder without model, builder, true)	32s
Test (unstable Discord API (no default features), unstable_discord_api, true)	45s
	52m 40s

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