chore(release): publish

- netlify-cms-app@2.15.7
 - netlify-cms-core@2.40.4
 - netlify-cms-ui-default@2.13.2
 - netlify-cms-widget-code@1.3.1
 - netlify-cms-widget-date@2.6.1
 - netlify-cms-widget-datetime@2.7.1
 - netlify-cms-widget-markdown@2.13.1
 - netlify-cms-widget-relation@2.10.1
 - netlify-cms-widget-select@2.8.1
 - netlify-cms@2.10.127

packages/netlify-cms-core/CHANGELOG.md

@@ -3,6 +3,17 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [2.40.4](https://github.com/netlify/netlify-cms/tree/master/packages/netlify-cms-core/compare/netlify-cms-core@2.40.3...netlify-cms-core@2.40.4) (2021-05-19)
+
+
+### Bug Fixes
+
+* **config:** allow empty public folder for collection,file,field ([#5391](https://github.com/netlify/netlify-cms/tree/master/packages/netlify-cms-core/issues/5391)) ([558b21f](https://github.com/netlify/netlify-cms/tree/master/packages/netlify-cms-core/commit/558b21f7002e3239d7632674fe57886425f7e15b))
+
+
+
+
+
 ## [2.40.3](https://github.com/netlify/netlify-cms/tree/master/packages/netlify-cms-core/compare/netlify-cms-core@2.40.2...netlify-cms-core@2.40.3) (2021-05-12)
 
 

packages/netlify-cms-core/package.json

@@ -1,7 +1,7 @@
 {
   "name": "netlify-cms-core",
   "description": "Netlify CMS core application, see netlify-cms package for the main distribution.",
-  "version": "2.40.3",
+  "version": "2.40.4",
   "repository": "https://github.com/netlify/netlify-cms/tree/master/packages/netlify-cms-core",
   "bugs": "https://github.com/netlify/netlify-cms/issues",
   "module": "dist/esm/index.js",