benches: bump `pprof` to v0.14 (#554) #1013

Job	Run time
build (1.81.0, thumbv7em-none-eabi)	18s
build (1.81.0, wasm32-unknown-unknown)	21s
minimal-versions	0s
build (stable, thumbv7em-none-eabi)	17s
test (1.81.0)	19s
build (stable, wasm32-unknown-unknown)	18s
test (stable)	21s
	1m 54s

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