Merge branch 'fix/app_update_test_s2' into 'master'

app_update: fix unit tests

See merge request espressif/esp-idf!7581

tools/unit-test-app/configs/app_update_s2

@@ -10,5 +10,5 @@ CONFIG_BOOTLOADER_APP_TEST=y
 CONFIG_BOOTLOADER_HOLD_TIME_GPIO=2
 CONFIG_BOOTLOADER_OTA_DATA_ERASE=y
 CONFIG_BOOTLOADER_NUM_PIN_FACTORY_RESET=4
-CONFIG_BOOTLOADER_NUM_PIN_APP_TEST=32
+CONFIG_BOOTLOADER_NUM_PIN_APP_TEST=18
 CONFIG_IDF_TARGET="esp32s2"