Bump panic-probe from 0.3.1 to 0.3.2 in /examples/stm32f4-event-printer #82

Job	Run time
stm32f4-event-printer	2m 7s
lib (1.62.0, use_alloc)	3m 39s
lib (1.62.0, use_alloc,defmt)	3m 49s
lib (1.62.0, use_heapless)	3m 27s
lib (1.62.0, use_heapless,defmt)	3m 37s
lib (stable, use_alloc)	1m 38s
lib (stable, use_alloc,defmt)	1m 45s
lib (stable, use_heapless)	1m 37s
lib (stable, use_heapless,defmt)	1m 41s
	23m 20s

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