Update repositories.txt

Add Arduino library for the INA229, SPI, 20 bit, voltage, current and power sensor.

Author: RobTillaart

repositories.txt

@@ -5456,6 +5456,7 @@ https://github.com/RobTillaart/IEEE754tools
 https://github.com/RobTillaart/INA219
 https://github.com/RobTillaart/INA226
 https://github.com/RobTillaart/INA228
+https://github.com/RobTillaart/INA229
 https://github.com/RobTillaart/INA236
 https://github.com/RobTillaart/INA239
 https://github.com/RobTillaart/INA3221_RT