Update repositories.txt (#7060)

Added ScioSense AS60xx library

Author: GuidoStefanutoScioSense

repositories.txt

@@ -6125,6 +6125,7 @@ https://github.com/sciosense/ens21x-arduino
 https://github.com/sciosense/ens220-arduino
 https://github.com/sciosense/ens190-arduino
 https://github.com/sciosense/ufm01-arduino
+https://github.com/sciosense/as60xx-arduino
 https://github.com/SConaway/AVRUtils
 https://github.com/Scottapotamas/xsens-mti
 https://github.com/scottchiefbaker/Arduino-SimpleSyslog