Update repositories.txt (#5180)

Added 7 DashIO libraries

Author: craigt543nz

repositories.txt

@@ -1,3 +1,10 @@
+https://github.com/dashio-connect/arduin-dashio-utils
+https://github.com/dashio-connect/arduino-dashioNano33BLE
+https://github.com/dashio-connect/arduino-dashioMKR1500
+https://github.com/dashio-connect/arduino-dashioESP
+https://github.com/dashio-connect/arduino-dashioBluno
+https://github.com/dashio-connect/arduino-dashioBluefruit
+https://github.com/dashio-connect/arduino-dashioSAMD_NINA
 https://github.com/rszczepanski93/EduBox_ArduinoLibrary
 https://github.com/MIT-Senseable-City-Lab/octopus-firmware
 https://github.com/Valdemir-DSW/DSW-painel-arduino-lib