Bump skia to milestone 133 (GPT 5.4)

[mattleibow]

Summary

• bump SkiaSharp from m132 to m133
• link Apple and Tizen native projects against the new jsonreader library
• regenerate bindings and add SKColorSpace.CreateCicp(...) plus coverage

Validation

• dotnet cake --target=externals-macos --arch=arm64
• dotnet build binding/SkiaSharp/SkiaSharp.csproj
• dotnet test tests/SkiaSharp.Tests.Console.sln --filter "Category=Smoke"
• dotnet test tests/SkiaSharp.Tests.Console.sln

Skia submodule PR branch: dev/update-skia-133-fresh

[github-actions]

📦 Try the packages from this PR

Warning

Do not run these scripts without first reviewing the code in this PR.

Step 1 — Download the packages

bash / macOS / Linux:

curl -fsSL https://raw.githubusercontent.com/mono/SkiaSharp/main/scripts/get-skiasharp-pr.sh | bash -s -- 3663

PowerShell / Windows:

iex "& { $(irm https://raw.githubusercontent.com/mono/SkiaSharp/main/scripts/get-skiasharp-pr.ps1) } 3663"

Step 2 — Add the local NuGet source

dotnet nuget add source ~/.skiasharp/hives/pr-3663/packages --name skiasharp-pr-3663

More options

Option	Description
--successful-only / -SuccessfulOnly	Only use successful builds
--force / -Force	Overwrite previously downloaded packages
--list / -List	List available artifacts without downloading
--build-id ID / -BuildId ID	Download from a specific build

Or download manually from Azure Pipelines — look for the nuget artifact on the build for this PR.

Remove the source when you're done:

dotnet nuget remove source skiasharp-pr-3663