fix: patch high-severity vulnerabilities in picomatch and vite (#128)

* chore: replace Dependabot references with Renovate

- SECURITY.md: update to mention Renovate (org-wide Mend Renovate)
- PROJECT_ASSESSMENT.md: mark Renovate as integrated (org-wide config)

Closes PRI-389. Parent PRI-387.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

* fix: override picomatch >=4.0.4 and vite >=6.4.2 to patch high-severity vulnerabilities

Resolves 3 high-severity vulnerabilities from pnpm audit:
- GHSA-c2c7-rcm5-vvqj: Picomatch ReDoS via extglob quantifiers (>=4.0.0 <4.0.4)
- GHSA-p9ff-h696-f583: Vite arbitrary file read via dev server WebSocket
- GHSA-4w7w-66w2-5vf9: Vite path traversal in optimized deps .map handling

Also addresses moderate GHSA-3v7f-55p6-f55p (picomatch method injection).

Remaining vulnerabilities (moderate/low) are in transitive dependencies
managed by @kinvolk/headlamp-plugin and @headlamp-k8s/eslint-config
which require upstream updates to those packages.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

---------

Co-authored-by: Chris Farhood <chris@farhood.org>
Co-authored-by: Paperclip <noreply@paperclip.ing>

SECURITY.md

@@ -212,7 +212,7 @@ If you discover a security vulnerability in this plugin, please report it via:
 
 The project uses:
 - **npm audit**: Runs automatically during `npm install`
-- **Dependabot**: GitHub Dependabot monitors dependencies and creates PRs for updates
+- **Renovate**: Automated dependency updates via Mend Renovate (org-wide configured)
 - **GitHub Actions**: CI workflow runs `npm audit` on every commit
 
 ### Updating Dependencies