PR for 2.3.1 release #794

Job	Run time
lint	7s
Test compiling (arduino:avr:uno)	2m 32s
Test compiling (arduino:sam:arduino_due_x)	52s
Test compiling (arduino:avr:mega)	43s
Test compiling (arduino:avr:leonardo)	26s
Test compiling (arduino:samd:nano_33_iot)	1m 2s
Test compiling (adafruit:samd:adafruit_metro_m4)	1m 57s
Test compiling (esp32:esp32:esp32doit-devkit-v1)	4m 16s
Test compiling (esp32:esp32:esp32s2)	2m 13s
Test compiling (esp32:esp32:esp32s3)	2m 54s
Test compiling (STMicroelectronics:stm32:GenF1:pnum=BLUEPILL_F103C8)	3m 34s
Test compiling (STMicroelectronics:stm32:Nucleo_64:pnum=NUCLEO_F411RE)	7m 23s
Test compiling (STMicroelectronics:stm32:GenF4:pnum=GENERIC_F405RGTX)	4m 14s
Test compiling (STMicroelectronics:stm32:GenL4:pnum=GENERIC_L475RGTX)	8m 14s
Test compiling (STMicroelectronics:stm32:Disco:pnum=B_G431B_ESC1)	1m 32s
Test compiling (arduino:mbed_rp2040:pico)	1m 15s
	43m 14s

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