Update docker.io/traefik Docker tag to v2.11.16

No problems whatsoever deploying to Proxmox VE K3s Kubernetes cluster via Helm Chart and Flux V2 reconciliation in a GitOps approach with dependency update facilitated by Mend's Renovate Bot.

This MR contains the following updates:

Package	Update	Change
docker.io/traefik	patch	`v2.11.14` -> `v2.11.16`

Release Notes

traefik/traefik (docker.io/traefik)

`v2.11.16`

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Bug fixes:

[server] Update golang.org/x dependencies (#11336 by rtribotte)

`v2.11.15`

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Bug fixes:

[acme] Update go-acme/lego to v4.20.4 (#11295 by ldez)
[http3] Update github.com/quic-go/quic-go to v0.48.2 (#11320 by kevinpollet)