monero: update boost to 1.84

[selsta]

See https://github.com/google/oss-fuzz/pull/12009#issuecomment-2196749251

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[github-actions[bot]]

selsta is a new contributor to projects/monero. The PR must be approved by known contributors before it can be merged. The past contributors are: maflcko, inferno-chromium, binaryFate

[selsta]

Will be re-opened by a different person who has the CLA signed.