v4.3.0 (#5099)

* chore(release): bump version to 4.3.0

* fix(release-prep.sh): ignore lib/vscode

* docs(CHANGELOG): add 4.3.0

* chore: bump chart version

* fixup!: remove change in postinstall

* fixup!: bullets in CHANGELOG

* fixup!: formatting

* fixup! typo in changelog

* fixup!: update date in changelog

Co-authored-by: Asher <ash@coder.com>