Add submission # 6762

#6762

Author: ArduinoBot

registry.txt

@@ -8267,3 +8267,4 @@ https://github.com/twin-science-robotics/hw_twin_aiot_module_arduino_library.git
 https://github.com/TektiteBiz/TektiteRotEv.git|Contributed|Tektite RotEv Controller Library
 https://github.com/Benas09/FujitsuAC.git|Contributed|FujitsuAC
 https://github.com/DIYables/arduino-uno-r4-web-server-library.git|Contributed|Web Server for Arduino Uno R4 WiFi
+https://github.com/Raghav117/bluetooth_ota_firmware_update.git|Contributed|BLE OTA Update