applications: machine_learning:Fix stack overflow on nRF54L15

Increase main stack size on nRF54L15
to support CRACEN_PROVISION_PROT_RAM_INV_DATA

Ref: NCSDK-34786

Signed-off-by: Marcin Jelinski <[email protected]>

Author: maje-emb

applications/machine_learning/configuration/nrf54l15dk_nrf54l15_cpuapp/prj.conf

@@ -59,7 +59,7 @@ CONFIG_EI_WRAPPER=y
 
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
 CONFIG_ISR_STACK_SIZE=1536
-CONFIG_MAIN_STACK_SIZE=768
+CONFIG_MAIN_STACK_SIZE=1024
 CONFIG_IDLE_STACK_SIZE=512
 
 CONFIG_HEAP_MEM_POOL_SIZE=2048