Structure file for Cardputer ADV bottom shell is incorrect

[bradmcnally]

The bottom shell stl file for the Cardputer ADV looks like it is accidentally reusing the Cardputer 1.1 bottom shell file.

https://github.com/m5stack/M5_Hardware/blob/master/Products/K132-Adv_Cardputer-Adv/Structures/Cardputer-Adv_Bottom_Shell.stl