not a bug, but solution for ESP32-S3

[stanelie]

Hello.

Trying to use this library on ESP32-S3, it failed to compile throwing errors about uart.

This replacement file for uart.c file fixes it for me :

https://github.com/davispolito/esp_dmx/blob/release/v4.1/src/dmx/hal/uart.c
(release/v4.1...davispolito:esp_dmx:release/v4.1)