[RP2040] bump Pico Core up to 3.9.3 #355

Job	Run time
build (esp8266:esp8266:nodemcuv2)	2m 38s
build (esp32:esp32:esp32:PartitionScheme=min_spiffs)	4m 45s
build (esp32:esp32:esp32s2)	6m 29s
build (esp32:esp32:esp32s3)	10m 45s
build (esp32:esp32:esp32c3)	6m 32s
build (esp32:esp32:esp32c6)	9m 51s
build (esp32:esp32:esp32h2)	4m 23s
build (STM32:stm32:Nucleo_64)	2m 55s
build (STMicroelectronics:stm32:GenF1)	3m 17s
build (STMicroelectronics:stm32:GenWL)	3m 30s
build (raspberry)	48s
build (energia:cc13xx:LAUNCHXL_CC1310)	3m 42s
build (CubeCell:CubeCell:CubeCell-GPS)	3m 12s
build (CubeCell:CubeCell:CubeCell-Board-PRO)	3m 24s
build (adafruit:nrf52:pca10056)	4m 29s
build (arduino:mbed_edge:edge_control)	3m 44s
build (arduino:samd:mzero_bl)	3m 30s
build (arduino:avr:mega)	35s
build (arduino:renesas_uno:minima)	3m 27s
build (arduino:renesas_uno:unor4wifi)	3m 43s
build (rp2040:rp2040:generic)	4m 8s
build (rp2040:rp2040:rpipicow)	6m 28s
build (arduino:mbed_rp2040:pico)	4m 2s
build (SiliconLabs:silabs:nano_matter)	1m 38s
build (WCH:ch32v:CH32V30x_EVT)	1m 18s
	1h 43m 13s

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