Upgrade Docusaurus to 3.1.0 (#4986)

Dependabot has done a partial upgrade with TBD behavior. This upgrades everything together.

---

#### Does this PR need a docs update or release note?

- [x] ⛔ No

#### Type of change

- [x] 🗺️ Documentation

website/package.json

@@ -14,9 +14,9 @@
     "write-heading-ids": "docusaurus write-heading-ids"
   },
   "dependencies": {
-    "@docusaurus/core": "3.0.1",
+    "@docusaurus/core": "3.1.0",
     "@docusaurus/plugin-google-gtag": "^3.1.0",
-    "@docusaurus/preset-classic": "3.0.1",
+    "@docusaurus/preset-classic": "3.1.0",
     "@loadable/component": "^5.16.3",
     "@mdx-js/react": "^3.0.0",
     "animate.css": "^4.1.1",