Increase the screenshot timeout further

Author: HadrienG2

uefi-test-runner/src/main.rs

@@ -69,9 +69,9 @@ fn check_screenshot(bt: &BootServices, name: &str) {
             .expect("Could not find serial port");
         let serial = unsafe { serial.as_mut() };
 
-        // Set a large timeout to avoid problems
+        // Set a large timeout to avoid problems with Travis
         let mut io_mode = *serial.io_mode();
-        io_mode.timeout = 3_000_000;
+        io_mode.timeout = 10_000_000;
         serial
             .set_attributes(&io_mode)
             .expect_success("Failed to configure serial port timeout");