Source Amplitude: add better response error msg to return error 400 reason file is too big

[marcosmarxm]

Tell us about the problem you're trying to solve

When users with large Amplitude data want to sync they receive a 400 error...
From Amplitude docs:

https://developers.amplitude.com/docs/export-api

Describe the solution you’d like

If I receive this error maybe we need to return a better response to user the logs aren't clear.

Describe the alternative you’ve considered or used

A clear and concise description of any alternative solutions or features you've considered or are using today.

Additional context

Add any other context or screenshots about the feature request here.

Are you willing to submit a PR?

Remove this with your answer :-)

[connor-napster]

Whats the best way to push this along?

[itaseskii]

I'll claim this issue.