Update repositories.txt (#6002)

Author: wallysalami

repositories.txt

@@ -28,6 +28,7 @@ https://github.com/adityasharma-tech/grafik-serial
 https://github.com/Neurotech-Hub/Hublink-BEAM
 https://github.com/JagritThukral/ubidots-mqtt-esp32/
 https://github.com/wallysalami/BarcodeGFX
+https://github.com/wallysalami/QRCodeGFX
 https://github.com/roncoa/SimRacingController
 https://github.com/KiselevIvan/kidLibrary
 https://github.com/dmachinewhisperer/micro-prompts-ino