Add new repository URL for HS300x sensor

Author: pdoebler

repositories.txt

@@ -8601,3 +8601,4 @@ https://github.com/versianih/hdw-utils
 https://github.com/asimzulfiqar/esp_cron
 https://github.com/marcoratto/DMFLib-Arduino
 https://github.com/nedesico/ESP32_Thermistor
+https://github.com/pdoebler/HS300x