CHIA-2091 Use boost v1.85 when compiling chiavdf from source on macos-intel

[AmineKhaldi]

Purpose:

This allows us to successfully compile chiavdf from source for now, until the underlying issue with newer boost versions is fixed.

Current Behavior:

CI failure: https://github.com/Chia-Network/chia-blockchain/actions/runs/12378217642/job/34549652480

New Behavior:

We are able to compile chiavdf from source on macos-intel and CI continues properly.

[coveralls-official]

Pull Request Test Coverage Report for Build 12391757446

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 26 unchanged lines in 6 files lost coverage.
• Overall coverage decreased (-0.02%) to 91.523%

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Files with Coverage Reduction	New Missed Lines	%
chia/_tests/simulation/test_simulation.py	1	96.45%
chia/wallet/wallet_node.py	1	88.24%
chia/_tests/core/util/test_lockfile.py	4	88.43%
chia/full_node/weight_proof.py	4	90.64%
chia/daemon/server.py	7	83.24%
chia/full_node/full_node.py	9	86.27%

Totals
Change from base Build 12381535704:	-0.02%
Covered Lines:	104957
Relevant Lines:	114485

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💛 - Coveralls

[arvidn]

I thought these changes were made to boost.asio years ago. maybe the old names were just deprecated