v.21.4Improvements

Update simdjson to version 0.9.1 to fix issue #21984

Update used version of simdjson to 0.9.1. This fixes #21984. #22057 (Vitaly Baranov).
Updated the version of the simdjson library used by ClickHouse to 0.9.1.

Why it matters

This update addresses and fixes the issue described in GitHub issue #21984 by incorporating improvements and bug fixes from simdjson version 0.9.1, enhancing JSON parsing reliability and performance in ClickHouse.

How to use it

The update is applied internally within ClickHouse. Users benefit from the fix automatically by upgrading to the ClickHouse version that includes simdjson 0.9.1. No additional configuration is required.