Add CallbackTimerR4 repository link (#7504)

nbourre · web-flow · commit 6161bce3c912 · 2025-12-30T14:16:30.000Z
diff --git a/repositories.txt b/repositories.txt
@@ -8787,3 +8787,4 @@ https://github.com/Aatiqur/EZConnect
 https://github.com/7semi-solutions/7Semi_ICM20948_Arduino-Library
 https://github.com/7semi-solutions/7Semi_SHT4x_Analog_Arduino-Library
 https://github.com/marinpopa/AsyncOTAManager
+https://github.com/embedded-kiddie/CallbackTimerR4
