Therefore don't just randomly be writing to a GPIO numbered -1
Instead just don't try to control the backlight
NOTE: I don't have a 'wiphone' to test with, but I saw this via inspection
while cleaning up some other stuff.
* Bump platfomio/espressif32 version to latest 6.7.0
* Fix deprecated constants
* Remove pin defs already defined by the framework
* ESP_EXT1_WAKEUP_ALL_LOW is deprecated for any target except esp32
* Enable LTO and use newlib nano flavor
* Make trunk happy
* Respect build_unflags of base env
* Recover float printfing
* Disable BLE_SM_PAIR_AUTHREQ_SC
* Distribute BLE_SM_PAIR_KEY_DIST_ID too
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Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Kevin Hester