Update repositories.txt (#5637)

Author: dejwk

repositories.txt

@@ -1850,6 +1850,7 @@ https://github.com/dejwk/roo_display
 https://github.com/dejwk/roo_flags
 https://github.com/dejwk/roo_icons
 https://github.com/dejwk/roo_io
+https://github.com/dejwk/roo_io_arduino
 https://github.com/dejwk/roo_logging
 https://github.com/dejwk/roo_material_icons
 https://github.com/dejwk/roo_onewire