chore(deps): clear high-severity npm audit findings (v0.13.3-beta)

CI Security Audit (npm audit --audit-level=high) was failing. Resolved all
high-severity advisories via non-breaking transitive bumps (npm audit fix,
no --force, no direct-dependency or source changes):

- frontend: form-data, ws (via socket.io-client), @babel/core,
  react-router-dom, js-yaml — now 0 vulnerabilities
- backend: form-data, ws (via socket.io) — 0 high-severity remaining

Only package-lock.json files changed plus the version bump. Verified both
workspaces: npm ci, lint, type-check, build, and backend jest (73 tests)
all pass.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "mikrotik-manager-backend",
-  "version": "0.13.2-beta",
+  "version": "0.13.3-beta",
   "description": "Mikrotik Network Management Platform - Backend API",
   "main": "dist/index.js",
   "scripts": {