Update repositories.txt (#7420)

Cloud Power Electric Industries（雲力電工） · web-flow · commit e7dfd7e047eb · 2025-12-15T20:08:19.000Z
diff --git a/repositories.txt b/repositories.txt
@@ -8740,3 +8740,4 @@ https://github.com/crane-elec/WFAN920
 https://github.com/stm32duino/ST25R500
 https://github.com/stm32duino/X-NUCLEO-NFC12A1
 https://github.com/LEKPCSTEAM/ESP32-OTA-Client
+https://github.com/cpei2025/ESPNowAdhoc
