Make device_id optional on signups table

This way, signup won't fail if for some reason, the
user's client-side JS doesn't provide an amplitude
device id.

Co-authored-by: Joseph Lyons <joseph@zed.dev>
1db75ca2cfMax Brunsfeld committed on 9/27/2022, 11:04:01 PMparent5d0b6a3
4 files changedLine totals unavailable