chore(release): publish

- netlify-cms-app@2.15.53
 - netlify-cms-backend-azure@1.3.0
 - netlify-cms-backend-bitbucket@2.14.0
 - netlify-cms-backend-github@2.14.0
 - netlify-cms-backend-gitlab@2.12.0
 - netlify-cms-core@2.52.0
 - netlify-cms-lib-util@2.14.0
 - netlify-cms-proxy-server@1.3.21
 - netlify-cms@2.10.173

packages/netlify-cms-proxy-server/CHANGELOG.md

@@ -3,6 +3,14 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [1.3.21](https://github.com/netlify/netlify-cms/compare/netlify-cms-proxy-server@1.3.20...netlify-cms-proxy-server@1.3.21) (2021-10-18)
+
+**Note:** Version bump only for package netlify-cms-proxy-server
+
+
+
+
+
 ## [1.3.20](https://github.com/netlify/netlify-cms/compare/netlify-cms-proxy-server@1.3.19...netlify-cms-proxy-server@1.3.20) (2021-08-17)
 
 **Note:** Version bump only for package netlify-cms-proxy-server

packages/netlify-cms-proxy-server/package.json

@@ -1,7 +1,7 @@
 {
   "name": "netlify-cms-proxy-server",
   "description": "Proxy server to be used with Netlify CMS proxy backend",
-  "version": "1.3.20",
+  "version": "1.3.21",
   "repository": "https://github.com/netlify/netlify-cms/tree/master/packages/netlify-cms-proxy-server",
   "bugs": "https://github.com/netlify/netlify-cms/issues",
   "license": "MIT",
@@ -41,7 +41,7 @@
     "@types/node": "^14.0.0",
     "@types/vfile-message": "^2.0.0",
     "jest": "^27.0.0",
-    "netlify-cms-lib-util": "^2.13.3",
+    "netlify-cms-lib-util": "^2.14.0",
     "nodemon": "^2.0.2",
     "ts-jest": "^27.0.0",
     "ts-loader": "^8.0.0",