feat: update at core version to 10d22155

- feat: update at core to rc2
- fix: The BT device name length cross the border
- fix: AT+CIPMUX=1 return OK when already has connection

Author: ustccw

components/at/lib/VERSION

@@ -1,3 +1,3 @@
-ESP32 lib       : 1c2c50a8
-ESP32S2 lib     : 1c2c50a8
-ESP8266 lib     : 1c2c50a8
+ESP32 lib       : 10d22155
+ESP32S2 lib     : 10d22155
+ESP8266 lib     : 10d22155