v1.2.91-nightly

What's Changed

Exciting New Features ✨

• feat: added json_typeof by @akoshchiy in #12633
• feat: Add sqlsmith tests for databend by @b41sh in #12630
• feat(http): add metrics on panics & query by @flaneur2020 in #12629

Thoughtful Bug Fix 🔧

• fix(metrics): fix query_scan_io* collect in select query by @akoshchiy in #12454

Code Refactor 🎉

• refactor: unify create index check. by @ariesdevil in #12614

Build/Testing/CI Infra Changes 🔌

• ci: sqllogic test for copy by @youngsofun in #12631

Documentation 📔

• docs: Environment Variables updates by @soyeric128 in #12636

Others 📒

• chore(query): refactor truncate metrics by @zhang2014 in #12634

Full Changelog: v1.2.90-nightly...v1.2.91-nightly