modules: fota: increase APP_FOTA_THREAD_STACK_SIZE

Stackoverflow on fmfu.

Signed-off-by: Giacomo Dematteis <giacomo.dematteis@nordicsemi.no>

Author: DematteisGiacomo

app/src/modules/fota/Kconfig.fota

@@ -12,7 +12,7 @@ if APP_FOTA
 
 config APP_FOTA_THREAD_STACK_SIZE
 	int "Thread stack size"
-	default 1728
+	default 2500
 
 config APP_FOTA_WATCHDOG_TIMEOUT_SECONDS
 	int "Watchdog timeout"