Remove jest and devDependencies in release

The new pre-install script was being included, which is dev-only.

This was always the intent; did not realize jq's merge was recursive.

ci/build/build-release.sh

@@ -49,7 +49,7 @@ bundle_code_server() {
   rsync typings/pluginapi.d.ts "$RELEASE_PATH/typings"
 
   # Adds the commit to package.json
-  jq --slurp '.[0] * .[1]' package.json <(
+  jq --slurp '(.[0] | del(.scripts,.jest,.devDependencies)) * .[1]' package.json <(
     cat << EOF
   {
     "commit": "$(git rev-parse HEAD)",