canonicalize the serial path

Author: MabezDev

espflash/src/cli/serial.rs

@@ -22,9 +22,9 @@ pub fn get_serial_port_info(
     let ports = detect_usb_serial_ports().unwrap_or_default();
 
     if let Some(serial) = &matches.serial {
-        find_serial_port(&ports, serial)
+        find_serial_port(&ports, &std::fs::canonicalize(serial)?.to_string_lossy())
     } else if let Some(serial) = &config.connection.serial {
-        find_serial_port(&ports, serial)
+        find_serial_port(&ports, &std::fs::canonicalize(serial)?.to_string_lossy())
     } else {
         let (port, matches) = select_serial_port(ports, config)?;