chore(release): publish

- netlify-cms-app@2.12.25
 - netlify-cms-core@2.31.0
 - netlify-cms-lib-widgets@1.4.0
 - netlify-cms-proxy-server@1.3.6
 - netlify-cms@2.10.61

packages/netlify-cms-lib-widgets/package.json

@@ -1,7 +1,7 @@
 {
   "name": "netlify-cms-lib-widgets",
   "description": "Shared utilities for Netlify CMS.",
-  "version": "1.3.5",
+  "version": "1.4.0",
   "repository": "https://github.com/netlify/netlify-cms/tree/master/packages/netlify-cms-lib-widgets",
   "bugs": "https://github.com/netlify/netlify-cms/issues",
   "module": "dist/esm/index.js",