Update repositories.txt (#5034)

Author: JAndrassy

repositories.txt

@@ -2942,6 +2942,7 @@ https://github.com/jandelgado/jled-pca9685-hal
 https://github.com/jandelgado/log4arduino
 https://github.com/jandrassy/ArduinoOTA
 https://github.com/Networking-for-Arduino/EthernetENC
+https://github.com/Networking-for-Arduino/EthernetEspAT
 https://github.com/Networking-for-Arduino/NetApiHelpers
 https://github.com/jandrassy/StreamLib
 https://github.com/jandrassy/TelnetStream