usermods CI: Use correct base esp32 platform

Author: willmmiles

usermods/platformio_override.usermods.ini

@@ -2,7 +2,7 @@
 default_envs = usermods_esp32, usermods_esp32c3, usermods_esp32s2, usermods_esp32s3
 
 [env:usermods_esp32]
-extends = env:esp32dev_V4
+extends = env:esp32dev
 custom_usermods = ${usermods.custom_usermods}
 board_build.partitions = ${esp32.extreme_partitions}  ; We're gonna need a bigger boat