Guilherme Noronha

I figured out the problem. When the sentence has all token as "O" the `_tokens` method creates begins with one extra position causing the index out of range in `ts[idx]`....

[Bug] dbt source freshness expected a timestamp but received a string

2

### Is this a new bug in dbt-athena? - [X] I believe this is a new bug in dbt-athena - [X] I have searched the existing issues, and I could...