tests: benchmarks: multicore: idle_uarte: extend timeout for uart TX

Prevent TX abort due to timeout.

Signed-off-by: Piotr Kosycarz <[email protected]>

Author: nordic-piks

tests/benchmarks/multicore/idle_uarte/src/main.c

@@ -24,7 +24,7 @@ LOG_MODULE_REGISTER(idle_uarte);
 #error Improper device tree configuration, UARTE test node not available
 #endif
 
-#define UART_ACTION_BASE_TIMEOUT_US 50000
+#define UART_ACTION_BASE_TIMEOUT_US 60000
 #define TEST_BUFFER_LEN		    512
 
 static const struct device *const uart_dev = DEVICE_DT_GET(UART_NODE);