ATF Normalization Issues

[dyaffe]

Problem
We're seeing issues with the Airtable connector in ATF here.

It looks to be failing in the case of a JSON pointer like foo/bar/* which ends in a star because then the value of star_split[0] would be the empty array and star_split[0][0] would fail. It also appears as though it could fail for nested arrays.

It is specifically failing for the task OverseaBrands/airtable/source-airtable with this error:

{"ts":"2023-09-11T17:52:30.287524999Z","level":"error","message":"thread 'main' panicked at 'index out of bounds: the len is 0 but the index is 0', src/interceptors/normalize.rs:52:41\nnote: run with `RUST_BACKTRACE=1` environment variable to display a backtrace","fields":null}

cc @mdibaiee