fix: Add PSRAM Option for Geekble nano

[syong0921]

fix: Add PSRAM Option for Geekble nano

Description of Change

we noticed that Geekble nano users need PSRAM option.
So enabled Geekble nano's PSRAM option in board.txt files

Tests scenarios

Tested under Arduino IDE v2.3.6, Arduino-esp32 core v3.2.0 with Geekble nano

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