perf: upgrade ajv, and upgrade typescript to 5.6.2 in monorepo (#8204)

Ajv 8.14.0 => 8.17.1

- Bundle size: 119.6kB => 111kB
- Dependencies: 5 => 4
- Gets rid of dependency on `punycode`. Will help with the annoying
deprecated module console warning spam

This also upgrades TypeScript to 5.6.2 in our monorepo. The most
type-relevant packages are updated as well, e.g. ts-essentials and
@types/node

packages/richtext-slate/package.json

@@ -51,7 +51,7 @@
   "devDependencies": {
     "@payloadcms/eslint-config": "workspace:*",
     "@types/is-hotkey": "^0.1.10",
-    "@types/node": "20.12.5",
+    "@types/node": "22.5.4",
     "@types/react": "npm:types-react@19.0.0-rc.0",
     "@types/react-dom": "npm:types-react-dom@19.0.0-rc.0",
     "payload": "workspace:*"