Update repositories.txt (#5184)

Arduino library for a vibration / tilt sensor e.g. SW-420, SW-18010P.

Author: RobTillaart

repositories.txt

@@ -5414,6 +5414,7 @@ https://github.com/RobTillaart/Troolean
 https://github.com/RobTillaart/TSL235R
 https://github.com/RobTillaart/TSL260R
 https://github.com/RobTillaart/UUID
+https://github.com/RobTillaart/Vibration
 https://github.com/RobTillaart/VolumeConverter
 https://github.com/RobTillaart/WaterMix
 https://github.com/RobTillaart/WaveMix