[dispenso] Update to version 1.6.2

[Brian Budge (graphicsMan)]

Port Update Checklist

• Complies with the maintainer guide
• Updated SHA512 checksums
• Version database updated via ./vcpkg x-add-version --all
• Exactly one version added per modified versions file

Update dispenso to version 1.6.2.

1.6.1 is skipped deliberately: it required find_package(concurrentqueue 1.0.5 CONFIG REQUIRED), which no installed concurrentqueue satisfies, so DISPENSO_USE_SYSTEM_CONCURRENTQUEUE=ON could not configure. 1.6.2 removes that requirement.

Verified locally on arm64-osx and arm64-osx-dynamic: static produces libdispenso.a, dynamic produces libdispenso.1.6.2.dylib with the expected symlinks.

[Billy O'Neal (BillyONeal)]

Thanks for the update!

GPT 5.6 Sol notes:

Direct consumers cannot compile when given only the triplet's root include directory: dispenso/thread_pool.h includes <moodycamel/concurrentqueue.h>, but vcpkg's concurrentqueue port installs that header under include/concurrentqueue/moodycamel. The CMake target supplies the additional dependency include directory and works correctly. This direct-consumer issue also exists in the current 1.6.0 package, so it does not need to block this version update.