.xlsx on Google Drive editable by gsheet can't be read by duckdb_gsheets 🦆

Hi @archiewood,

I was trying to read a given google sheet ...
but i realized that my errors came from 
that I was trying to read a `.xlsx` stored in my google drive ^_^

Could it be that one day your awesome extension could interact with those file types ?

Congrats btw for this extension :)

Antoine