When the signal signatures of Fig-1 for the ESP32C3 Super Mini Dev Board are consulted with the schematics and data sheets (attached), it is found that GPIO-4 (Physical Pin-9) is SDA (alternate function) and GPIO-5 (physical Pin-10) is SCL (alternate function).
Figure-1:
ESP32-C3-EspressifDataSheetSuperMiniBoard.pdf (782.3 KB)