feat: upgrade react from 16.14.0 to 19.2.3

Snyk has created this PR to upgrade react from 16.14.0 to 19.2.3.

See this package in npm:
react

See this project in Snyk:
https://app.snyk.io/org/mattdanielbrown/project/adb4436b-8696-4bad-8105-d91922c4bf55?utm_source=github-cloud-app&utm_medium=referral&page=upgrade-pr

Author: snyk-io[bot]

package-lock.json

@@ -7,7 +7,7 @@
     "analytics": "^0.3.5",
     "faunadb": "^2.13.1",
     "markdown-magic": "^1.0.0",
-    "react": "^16.13.1",
+    "react": "^19.2.3",
     "react-dom": "^16.13.1",
     "react-scripts": "3.4.1"
   },