release: v4.0.2 (#4801)

* Disable BROWSER env var

Right now the browser helper script does not actually work.  It seems
safer to skip this until we can fix it.

* Bump to 4.0.2

* Update changelog for 4.0.2

package.json

@@ -1,7 +1,7 @@
 {
   "name": "code-server",
   "license": "MIT",
-  "version": "4.0.1",
+  "version": "4.0.2",
   "description": "Run VS Code on a remote server.",
   "homepage": "https://github.com/cdr/code-server",
   "bugs": {