Improve performance of seq/map peeks #1206
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This matches how peeking is done within deserialize_any and other Deserializer methods
We look at seq.first/map.first only once.
Finistere
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Oct 23, 2024
We're fixing dependency versions quite strictly for a reason that escapes me. We miss updates like this one: serde-rs/json#1206. So relaxed a few of those. And fixed the benchmarks now that we're using `spawn_blocking` inside the engine
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Followup to #1205. Using the same benchmark shown in that PR, this improves performance from 235 MB/s to 255 MB/s (8%).