EDIT - Increase Depth Limit in ptrFromMapping

[doscode-kr]

• Increase Depth Limit in ptrFromMapping Function for Deeper Structure Access in reflect.go
• This fix addresses errors encoutered with tables exceeding 255 columns.
• this fixes issue #1359

[doscode-kr]

I found that this is same issue as below : https://github.com/volatiletech/sqlboiler/pull/1038