Updated changelog

Author: bolt12

ouroboros-consensus-diffusion/changelog.d/20240205_151901_armandoifsantos_4782.md

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+### Patch
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+### Non-Breaking
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+### Breaking
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+- Added `PeerSharingAPI` to `NodeKernel`
+- Added `peerSharingRng` to `NodeKernelArgs`
+- Refactored some diffusion functions to remove `computePeers` callback
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