net/traefik: Update to upstream release 3.6.11
Details:
- Bugfix release, see https://github.com/traefik/traefik/releases/tag/v3.6.11
- Includes security fixes for several vulnerabilities. CVE-2026-32595 (BasicAuth Middleware Timing Attack) CVE-2026-32305 (Potential mTLS Bypass via Fragmented TLS ClientHello) CVE-2026-32695 (Details not yet available)
MFH: 2026Q1
Security: CVE-2026-32595
CVE-2026-32305 CVE-2026-32695