giga: increase CONFIG_HEAP_MEM_POOL_SIZE

This is needed to allow wifi starting

Signed-off-by: pennam <m.pennasilico@arduino.cc>

Author: pennam

variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.conf

@@ -11,7 +11,7 @@ CONFIG_CDC_ACM_DTE_RATE_CALLBACK_SUPPORT=y
 
 CONFIG_LLEXT_STORAGE_WRITABLE=n
 CONFIG_SHARED_MULTI_HEAP=y
-CONFIG_HEAP_MEM_POOL_SIZE=2048
+CONFIG_HEAP_MEM_POOL_SIZE=24576
 CONFIG_SHELL_STACK_SIZE=32768
 CONFIG_MAIN_STACK_SIZE=32768
 CONFIG_LLEXT_HEAP_SIZE=128