net/traefik: Update to upstream release 2.11.5

Details:

• Bugfix release, see https://github.com/traefik/traefik/releases/tag/v2.11.5
• Fixes an Azure Identity Libraries Elevation of Privilege Vulnerability, as described in https://github.com/traefik/traefik/security/advisories/GHSA-rvj4-q8q5-8grf

MFH: 2024Q2
Security: CVE-2024-35255