[fp16] Update to later version

[luncliff]

Changes

Update to the latest commit

References

• Maratyszcza/FP16@581ac1c

Triplet Support

All triplets in the registry

Configuration

"vcpkg-configuration.json" changes for the release.

{
    "registries": [
        {
            "kind": "git",
            "repository": "https://github.com/luncliff/vcpkg-registry",
            "packages": [
                "fp16"
            ],
            "baseline": "..."
        }
    ]
}