Fix: propagate errors happening in eachPage callback

[antoineol]

It happens that an error is thrown within the callback function passed to table.select(...).eachPage(XXX). The previous code only recognizes network errors, With this change, errors thrown by the JS code will propagate, instead of having an obscure error:

Unhandled rejection
TypeError: Cannot read property 'offset' of undefined
[1]     at /home/ubuntu/em-projects/em-monorepo/airtable-babel-synchronisation/node_modules/airtable/lib/query.js:119:28
...

I don't know how to update the unit tests to maintain the 100% coverage. I'd be grateful if you could take the test update or advise on where/how this change should be tested.