Lambda code storage is at 56%

[carlgieringer]

We are using 41.9 GB (56% of 75.0 GB) of our Lambda code storage (visible from Lambdas dashboard.) This is surprising given that we don't have that many lambdas. Probably it is due to the hourly release of the API lambda. (We are on version 6455 of that lambda.)

We should decrease the frequency of that release to daily so that we don't exhaust this resource.

Separately we should look at cleaning up the old code since we don't need more than three code versions for the API lambda.