net/traefik: Update to upstream release 2.11.3

Details:
- Bugfix release, see
  https://github.com/traefik/traefik/releases/tag/v2.11.3
- The website lists CVE-2024-24788 as security reference, but this is
  not a vulnerability in traefik itself, but in the Go stdlib, which
  was fixed in Go 1.22.3.

MFH:		2024Q2
Security:	CVE-2024-24788

net/traefik/Makefile

 PORTNAME=	traefik
-PORTVERSION=	2.11.2
-PORTREVISION=	2
+PORTVERSION=	2.11.3
 CATEGORIES=	net
 MASTER_SITES=	LOCAL/riggs/${PORTNAME}
 

net/traefik/distinfo

-TIMESTAMP = 1712998209
-SHA256 (traefik-2.11.2.tar.xz) = 001d59c2540d22b37b690cadb49ea67bec7980b04e9947413e3133041fd3b7ec
-SIZE (traefik-2.11.2.tar.xz) = 21235432
+TIMESTAMP = 1716632457
+SHA256 (traefik-2.11.3.tar.xz) = 42b90e7370b61fd9eb50ee1c896e5fd874d6251a0b510eecef18cbba1cb6319d
+SIZE (traefik-2.11.3.tar.xz) = 21266360