Update package.json

Author: natakazakova

dashboard-react-app/package.json

@@ -3,7 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "@devexpress/analytics-core": "20.2-next",
+    "@devexpress/analytics-core": "20.2-stable",
     "@testing-library/jest-dom": "^4.2.4",
     "@testing-library/react": "^9.5.0",
     "@testing-library/user-event": "^7.2.1",