Update repositories.txt (#4506)

RobTillaart · web-flow · commit 044374d70d01 · 2024-05-09T18:47:43.000Z
Arduino library for the I2C LTR390 UV sensor.
diff --git a/repositories.txt b/repositories.txt
@@ -5088,6 +5088,7 @@ https://github.com/RobTillaart/LineFormatter
 https://github.com/RobTillaart/Logistic
 https://github.com/RobTillaart/LTC2991
 https://github.com/RobTillaart/LTR390_DFR
+https://github.com/RobTillaart/LTR390_RT
 https://github.com/RobTillaart/LUHN
 https://github.com/RobTillaart/M5ANGLE8
 https://github.com/RobTillaart/M5ROTATE8
