bake-kdf: bump `belt-hash` dependency to v0.2 (#197) #191

Job	Run time
build (1.85.0, wasm32-unknown-unknown)	17s
build (stable, wasm32-unknown-unknown)	19s
test (stable)	22s
build (1.85.0, thumbv7em-none-eabi)	17s
minimal-versions / minimal-versions	24s
build (stable, thumbv7em-none-eabi)	17s
test (1.85.0)	23s
	2m 19s

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