fix: website/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-8187303
- https://snyk.io/vuln/SNYK-JS-NEXT-8186172

website/package.json

@@ -38,7 +38,7 @@
     "@hashicorp/react-text-split-with-image": "^4.2.2",
     "@hashicorp/react-use-cases": "^4.0.1",
     "@hashicorp/react-vertical-text-block-list": "^6.0.3",
-    "next": "10.2.2",
+    "next": "14.2.7",
     "next-mdx-remote": "3.0.1",
     "next-remote-watch": "1.0.0",
     "nuka-carousel": "4.7.7",