benches: bump `pprof` to v0.14 (#554) #536

Job	Run time
build (1.83.0, thumbv7em-none-eabi)	18s
build (1.83.0, wasm32-unknown-unknown)	19s
test (1.83.0)	24s
build (stable, thumbv7em-none-eabi)	19s
test (stable)	25s
build (stable, wasm32-unknown-unknown)	22s
minimal-versions / minimal-versions	55s
	3m 2s

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