align with upstream buildenv and librararies

* esp8266 core 4.1.0
* esp32 "V4" core 5.2.0
* neopixelbus 2.7.5
* use NeoPixelBusLg
* Make SPI bus speed user configurable

* adjust MM buildEnv to match upstream

https://github.com/Aircoookie/WLED/pull/3144

https://github.com/Aircoookie/WLED/pull/3173

wled00/set.cpp

@@ -159,7 +159,7 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
       // actual finalization is done in WLED::loop() (removing old busses and adding new)
       // this may happen even before this loop is finished so we do "doInitBusses" after the loop
       if (busConfigs[s] != nullptr) delete busConfigs[s];
-      busConfigs[s] = new BusConfig(type, pins, start, length, colorOrder | (channelSwap<<4), request->hasArg(cv), skip, awmode); //WLEDMM to do bus, freqHz
+      busConfigs[s] = new BusConfig(type, pins, start, length, colorOrder | (channelSwap<<4), request->hasArg(cv), skip, awmode, freqHz);
       busesChanged = true;
     }
     //doInitBusses = busesChanged; // we will do that below to ensure all input data is processed