Update to Arduino-Pico 4.3.0, Pico2W support #222

Job	Run time
build (ubuntu-latest, examples/arduino-blink)	3m 26s
build (ubuntu-latest, examples/arduino-ethernet-ota)	3m 16s
build (ubuntu-latest, examples/arduino-wifi-scan)	2m 25s
build (ubuntu-latest, examples/arduino-ota)	2m 19s
build (ubuntu-latest, examples/arduino-signed-ota)	2m 28s
build (ubuntu-latest, examples/arduino-external-libs)	1m 14s
build (ubuntu-latest, examples/picosdk-blink)	56s
build (windows-latest, examples/arduino-blink)	8m 19s
build (windows-latest, examples/arduino-ethernet-ota)	6m 51s
build (windows-latest, examples/arduino-wifi-scan)	6m 1s
build (windows-latest, examples/arduino-ota)	5m 17s
build (windows-latest, examples/arduino-signed-ota)	6m 7s
build (windows-latest, examples/arduino-external-libs)	3m 47s
build (windows-latest, examples/picosdk-blink)	3m 5s
build (macos-latest, examples/arduino-blink)	3m 44s
build (macos-latest, examples/arduino-ethernet-ota)	3m 12s
build (macos-latest, examples/arduino-wifi-scan)	2m 25s
build (macos-latest, examples/arduino-ota)	2m 32s
build (macos-latest, examples/arduino-signed-ota)	2m 38s
build (macos-latest, examples/arduino-external-libs)	2m 23s
build (macos-latest, examples/picosdk-blink)	1m 38s
	1h 14m 3s

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