Update repositories.txt (#6618)

Author: Rupakpoddar

repositories.txt

@@ -5896,6 +5896,7 @@ https://github.com/ruiseixasm/Versatile_RotaryEncoder
 https://github.com/ruminize/FlashLightLED
 https://github.com/Rupakpoddar/FirebaseArduino
 https://github.com/Rupakpoddar/ConsumerKeyboard
+https://github.com/Rupakpoddar/ESP32Sonos
 https://github.com/rv701/SPL06-007
 https://github.com/RyoKosaka/HelloDrum-arduino-Library
 https://github.com/ryraki/FXLS89xx_Arduino