Update docker.io/traefik Docker tag to v3.3.7

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	`v3.3.6` -> `v3.3.7`

Release Notes

traefik/traefik (docker.io/traefik)

`v3.3.7`

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Bug fixes:

[logs,middleware,accesslogs] Add SpanID and TraceID accessLogs fields only when tracing is enabled (#11715 by rtribotte)