net/traefik: Update to upstream version 2.9.8

Details:

• Bugfix release, see https://github.com/traefik/traefik/releases/tag/v2.9.8
• Uses new version of the net module with a fix for CVE-2022-41721

MFH: 2023Q1
Security: CVE-2022-41721
(cherry picked from commit 97896c1f6136ff1cbeded05b1a224e2f6f67d82d)