Rcs-pydantic

What's Changed
* pydantic 2.0 migrate by xncbf in https://github.com/xncbf/rcs-pydantic/pull/23


**Full Changelog**: https://github.com/xncbf/rcs-pydantic/compare/v1.0.0...v2.0.0

What's Changed
* agency key, brand key 의무화 by xncbf in https://github.com/xncbf/rcs-pydantic/pull/21


**Full Changelog**: https://github.com/xncbf/rcs-pydantic/compare/v0.9.0...v1.0.0

What's Changed
* Update RcsMessage for KT RCS v2.0 by HminiL in https://github.com/xncbf/rcs-pydantic/pull/19


**Full Changelog**: https://github.com/xncbf/rcs-pydantic/compare/v0.8.0...v0.9.0

What's Changed
* Update rcsInfo and legacyInfo schema for RCS v2.0 by HminiL in https://github.com/xncbf/rcs-pydantic/pull/18


**Full Changelog**: https://github.com/xncbf/rcs-pydantic/compare/v0.7.0...v0.8.0

**Full Changelog**: https://github.com/xncbf/rcs-pydantic/compare/v0.6.0...v0.7.0

What's Changed
* support python 3.11 by xncbf in https://github.com/xncbf/rcs-pydantic/pull/16
* feat: message base enum update by HyeminLee1 in https://github.com/xncbf/rcs-pydantic/pull/17


**Full Changelog**: https://github.com/xncbf/rcs-pydantic/compare/v0.5.5...v0.6.0