chore: Bump vulnerable dependencies (#45513)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Chores**
* Upgraded the UUID library to a newer major version across apps and
removed a now-unneeded dev dependency.
  * Pinned PostCSS to a workspace-specific version to stabilize builds.
* **Refactor**
* Improved internal identifier generation for more consistent behavior
without changing outward functionality.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

apps/docs/package.json

@@ -119,7 +119,7 @@
     "unist-builder": "^3.0.1",
     "unist-util-filter": "^4.0.1",
     "unist-util-visit": "^4.1.2",
-    "uuid": "^9.0.1",
+    "uuid": "^14.0.0",
     "valtio": "catalog:",
     "yaml": "^2.8.1",
     "zod": "catalog:"
@@ -144,7 +144,6 @@
     "@types/react-copy-to-clipboard": "^5.0.4",
     "@types/react-dom": "catalog:",
     "@types/unist": "^2.0.6",
-    "@types/uuid": "^10.0.0",
     "@redocly/cli": "^2.25.3",
     "amaro": "^1.1.5",
     "api-types": "workspace:*",