chore(release): publish

- netlify-cms-app@2.15.28
 - netlify-cms-backend-github@2.13.4
 - netlify-cms@2.10.148

packages/netlify-cms-app/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.
 
+## [2.15.28](https://github.com/netlify/netlify-cms/compare/netlify-cms-app@2.15.27...netlify-cms-app@2.15.28) (2021-07-20)
+
+**Note:** Version bump only for package netlify-cms-app
+
+
+
+
+
 ## [2.15.27](https://github.com/netlify/netlify-cms/compare/netlify-cms-app@2.15.26...netlify-cms-app@2.15.27) (2021-07-14)
 
 **Note:** Version bump only for package netlify-cms-app

packages/netlify-cms-app/package.json

@@ -1,7 +1,7 @@
 {
   "name": "netlify-cms-app",
   "description": "An extensible, open source, Git-based, React CMS for static sites. Reusable congiuration with React as peer.",
-  "version": "2.15.27",
+  "version": "2.15.28",
   "homepage": "https://www.netlifycms.org",
   "repository": "https://github.com/netlify/netlify-cms/tree/master/packages/netlify-cms-app",
   "bugs": "https://github.com/netlify/netlify-cms/issues",
@@ -36,7 +36,7 @@
     "netlify-cms-backend-azure": "^1.2.2",
     "netlify-cms-backend-bitbucket": "^2.13.3",
     "netlify-cms-backend-git-gateway": "^2.12.2",
-    "netlify-cms-backend-github": "^2.13.3",
+    "netlify-cms-backend-github": "^2.13.4",
     "netlify-cms-backend-gitlab": "^2.11.4",
     "netlify-cms-backend-proxy": "^1.2.3",
     "netlify-cms-backend-test": "^2.11.3",