Finalize deployment script should handle updates to itself

[emilgoldsmith]

Expected Behavior

Updating the finalize-deployment.sh script should actually run the newest one

Current Behavior

Right now it runs the old one, because it calls git pull inside it so it won't be updated at the time of calling

Possible Solution

The more hardcore fix is something like detecting if it changed and then rerunning the script inside the script. But I think the easiest way is probably just to do a ssh USER@IP bash -ic 'cd ~/server && git pull before running the script in our CI config, and maybe also do some checking to make sure that the pull was clean (no conflicts etc.)