esp32/sdkconfig: Increase max number of open sockets from 4 to 8.
esp32/sdkconfig: Increase max number of open sockets from 4 to 8.

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