esp32/main: Bump heap size from 64k to 96k.
esp32/main: Bump heap size from 64k to 96k.

micropython/micropython-esp32,SHA2017-badge/micropython-esp32,MrSurly/micropython-esp32,Peetz0r/micropython-esp32,Peetz0r/micropython-esp32,SHA2017-badge/micropython-esp32,Peetz0r/micropython-esp32,SHA2017-badge/micropython-esp32,micropython/micropython-esp32,Peetz0r/micropython-esp32,micropython/micropython-esp32,MrSurly/micropython-esp32,MrSurly/micropython-esp32,SHA2017-badge/micropython-esp32,micropython/micropython-esp32,SHA2017-badge/micropython-esp32,Peetz0r/micropython-esp32,MrSurly/micropython-esp32,micropython/micropython-esp32,MrSurly/micropython-esp32