fix: upgrade react-dom from 18.2.0 to 18.3.1

Snyk has created this PR to upgrade react-dom from 18.2.0 to 18.3.1.

See this package in npm:
react-dom

See this project in Snyk:
https://app.snyk.io/org/sammyfilly/project/cdba9777-c4f6-42f5-a9ef-b13daa71ab27?utm_source=github&utm_medium=referral&page=upgrade-pr

examples/with-formspree/package.json

@@ -9,6 +9,6 @@
     "@formspree/react": "latest",
     "next": "latest",
     "react": "18.2.0",
-    "react-dom": "18.2.0"
+    "react-dom": "18.3.1"
   }
 }