Add submission # 6693

#6693

Author: ArduinoBot

registry.txt

@@ -8290,3 +8290,4 @@ https://github.com/sstaub/ST7565DOG.git|Contributed|ST7565DOG
 https://github.com/Nezaemmy/NezaButton.git|Contributed|NezaButton
 https://github.com/wisec/tinysleeper.git|Contributed|TinySleeper
 https://github.com/piruetasxyz/FrecuenciasMIDI.git|Contributed|FrecuenciasMIDI
+https://github.com/sparkfun/SparkFun_Authentication_Coprocessor_Arduino_Library.git|Contributed|SparkFun Authentication Coprocessor Arduino Library