docs: add changelog for 6.6.0-beta.2

docs: add changelog for 5.2.3

docs: add changelog for 6.0.0-beta.1

docs: add changelog for 5.2.2

docs: add changelog for 6.0.0-beta.0

docs: add changelog for 5.2.1

docs: add changelog for 5.2.0

docs: add changelog for 5.2.0-rc.0

docs: add changelog for 5.1.3

docs: add changelog for 5.2.0-beta.1