message: docs(changelog): 4.0.0-rc.8
diff: @@ -19,6 +19,20 @@ Vant follows [Semantic Versioning 2.0.0](https://semver.org/lang/zh-CN/).
  ## Details
  +### [v4.0.0-rc.8](https://github.com/vant-ui/vant/compare/v4.0.0-rc.7...v4.0.0-rc.8)
  +
  +`2022-11-20`
  +
  +**Feature**
  +
  +- add new BackTop component, note that the API is not stable yet, we may change the API before 4.0 release. [#11236](https://github.com/vant-ui/vant/issues/11236)
  +
  +**Bug Fixes**
  +
  +- DropdownItem: should inherit attrs when using teleport [#11273](https://github.com/vant-ui/vant/issues/11273)
  +- List: incorrect initial loading value [#11275](https://github.com/vant-ui/vant/issues/11275)
  +- NumberKeyboard: should inherit attrs when using teleport [#11274](https://github.com/vant-ui/vant/issues/11274)
  +
  ### [v4.0.0-rc.7](https://github.com/vant-ui/vant/compare/v4.0.0-rc.6...v4.0.0-rc.7)
  `2022-11-13`
  