update depndencies

- add engines targeting dev
- bump webpack
- update-oss-attribution CI
- appease eslint for webpack
- clean up packages
  - move @types to devDependencies
  - moved concurrently to devDependencies
  - remove unused babel

webpack/webpack.prod.js

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
 const merge = require('webpack-merge');
 const common = require('./webpack.common.js');