net/traefik: Update to upstream release 3.7.14
Details:
- Bug- and security fixes, see https://github.com/traefik/traefik/releases/tag/v3.7.14
MFH: 2026Q4
Security: https://github.com/traefik/traefik/security/advisories/GHSA-53qr-784g-cj35
https://github.com/traefik/traefik/security/advisories/GHSA-cw35-4q88-3rmp https://github.com/traefik/traefik/security/advisories/GHSA-fh26-gfpp-7xxx https://github.com/traefik/traefik/security/advisories/GHSA-mwrr-6hp4-pxr6 https://github.com/traefik/traefik/security/advisories/GHSA-qm9f-w54v-q2qh https://github.com/traefik/traefik/security/advisories/GHSA-qvj7-gq9c-hp7q https://github.com/traefik/traefik/security/advisories/GHSA-rv2h-qh7j-xrjw https://github.com/traefik/traefik/security/advisories/GHSA-mhjw-hmjv-p99x
(cherry picked from commit 59439a24e58790e32e5dfb63005661cb47f7000a)