chore(version): Update package versions to 3.13.0-beta.21 [skip ci]

addOns/externals/devDependencies/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@externals/devDependencies",
   "description": "External dev dependencies - put dev build dependencies here",
-  "version": "3.13.0-beta.20",
+  "version": "3.13.0-beta.21",
   "license": "MIT",
   "private": true,
   "engines": {