You are using staging server - a separate instance of the ESP Component Registry that allows you to try distribution tools and processes without affecting the real registry.
# Waveshare E-Paper Display Driver for 13.3in B&W Display (13in3k) This components provides the display driver for the 13.3" B&W Display. Original Waveshare Sample code can be found at: https://github.com/waveshareteam/e-Paper
idf.py add-dependency "dannys42/waveshare-epd-13in3k^0.0.1"