doc: update CHANGELOG.md.

release: 1.3.1

release: 1.3.0

release: 1.3.0-beta.4

release: 1.3.0-beta.3.

release: 1.3.0-beta.2

release: 1.3.0-beta.1.

release: 1.2.0. (halo-dev#467)

release: 1.2.0.

Co-authored-by: Jiahuan Shen <[email protected]>
Co-authored-by: John Niang <[email protected]>
Co-authored-by: Ryan Wang <[email protected]>
Co-authored-by: null <[email protected]>
Co-authored-by: bobo <[email protected]>
Co-authored-by: Lei XinXin <[email protected]>
Co-authored-by: 寒山 <[email protected]>
Co-authored-by: IJKZEN <[email protected]>

release: 1.2.0-beta.5.

release: 1.2.0-beta.4.