Bump traefik from v2.2.0 to v2.2.8 in /compose/production/traefik#56

dependabot-preview[bot] wants to merge 1 commit intomasterlinuxluigi/MapnikTileServer:masterfrom

dependabot/docker/compose/production/traefik/traefik-v2.2.8linuxluigi/MapnikTileServer:dependabot/docker/compose/production/traefik/traefik-v2.2.8Copy head branch name to clipboard