Added caret (^) to both the react and react-dom dependencies in example-nextjs demo. (#626)

Co-authored-by: Christiaan Landman <christiaan@journeyapps.com>

Author: dean-journeyapps

demos/example-nextjs/package.json

@@ -23,8 +23,8 @@
     "lato-font": "^3.0.0",
     "lexical": "^0.15.0",
     "next": "14.2.3",
-    "react": "18.2.0",
-    "react-dom": "18.2.0"
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0"
   },
   "devDependencies": {
     "@types/node": "^20.12.12",