v0.8.7-nightly

What's Changed

Exciting New Features ✨

• feat(query): Introduce custom allocator for HashTable by @sundy-li in #7221
• feat(functions-v2): migrate bin, oct, hex, and unhex. by @RinChanNOWWW in #7219
• feat: run databend stage on GCS backend by @ClSlaid in #7197
• feat: add show grant on object and show grant of share sql by @lichuang in #7181

Thoughtful Bug Fix 🔧

• fix: ProtocolViolation error on OPTIMZE ALL by @Xuanwo in #7220
• fix(function-v2): make multi_if accept null conditions by @andylokandy in #7226

Code Refactor 🎉

• refactor(query): fix some minor bugs and building in ci by @sundy-li in #7227
• refactor(sessions): decoupling session manager and other managers by @zhang2014 in #7093

Documentation 📔

• docs: add doc about how to deploy databend on kubernetes by @ZhiHanZ in #7234
• docs: union all by @soyeric128 in #7281

Full Changelog: v0.8.4-nightly...v0.8.7-nightly