Update changelog for 4.0.2

chore: update CHANGELOG for 4.0.1

Bump test plugin code-server engine

chore(release): bump version to 3.12.0

chore(release): bump version to 3.11.1

chore(release): bump version to 3.11.0

refactor: remove extra step in release-prep.sh

Update changelog for 3.10.1

chore(ci): fix release scripts

chore(release): bump version to 3.9.3