net/traefik: Update to upstream release 2.9.6

Details:

• Security update, fixes multiple CVEs, see https://github.com/traefik/traefik/releases/tag/v2.9.6
• Additional bugfixes and doc improvements

MFH: 2022Q4
Security: CVE-2022-23469

		CVE-2022-46153

(cherry picked from commit 332d96dd4d0b5e8ff05a6c9fdbbb4fe4120fa426)