Push processed Fastly logs to transition-stats master

We've been running this script manually for the last week with it
pushing to a branch in transition-stats, and we're confident now
that it's all ok and so can push to master and be fully automated.

There's now a daily cron job running this script, and this change should be the last step to get these logs being processed without any manual intervention... :pray: :chart_with_upwards_trend: :8ball: