Add ANBSensorsModbus repository link (#6818)

Author: SRGDamia1

repositories.txt

@@ -2576,6 +2576,7 @@ https://github.com/EnviroDIY/Sodaq_DS3231
 https://github.com/EnviroDIY/YosemitechModbus
 https://github.com/EnviroDIY/GeoluxCamera
 https://github.com/EnviroDIY/LoRa_AT
+https://github.com/EnviroDIY/ANBSensorsModbus
 https://github.com/eoh-jsc/era-lib
 https://github.com/epsilonrt/ad7124
 https://github.com/epsilonrt/EepromSecureData