Update DWA_BOOST_VERSION for Boost 1.82

[rolledhand]

Compatibility:

build (Houdini 21.0.680, macOS Tahoe, Xcode 26.0.1)

Issues/Tickets:

• Related OpenMoonRay bring-up PR: Moonray macOS: update build compatibility for Houdini 21.0.680

Release notes comment:

Updates the Boost version macro in MoonrayDso.cmake for Boost 1.82 compatibility.

Comments for the reviewer:

• This PR updates cmake/MoonrayDso.cmake:
  • DWA_BOOST_VERSION from 1073000 to 1082000
• This change was required as part of the Houdini 21.0.680 macOS bring-up using Boost 1.82.
• It is intended to support the related OpenMoonRay compatibility branch/PR for Houdini 21.0.680 on macOS.
• Related OpenMoonRay branch:
  • rolledhand/openmoonray -> Moonray-Houdini21-macOS

Look or scene setup change:

No intended look or scene setup change. This is a build/config compatibility update only.

Special notes for production:

• This is a supporting compatibility change for Boost 1.82 usage.
• No expected runtime or look change from this PR by itself.
• Intended to be consumed together with the related OpenMoonRay Houdini 21.0.680 macOS compatibility updates.

Attention/Reviewers:

dreamworksanimation/openmoonray-maintainers

Checklist:

• Documentation has been updated.
• Includes new unit tests.
• Includes new RATS tests.