v1.0.0-rc.39

Release candidate 39.

Publish-pipeline fixes carried from rc.38:

• NuGet: thin meta csproj (fixes HTTP 413 on publish)
• Docker: gha cache-export ignore-error (image already pushed by digest)
• Go module tag job runs after the Swift tag-move (fixes ref-mismatch race)
• Dart: freezed lock refreshed to stable 3.2.5 for frb 2.12

Regenerated with alef 0.47.1.

Zig

Add to your build.zig.zon:

.dependencies = .{
    .xberg-zig = .{\n        .url = \"https://github.com/xberg-io/xberg/releases/download/v1.0.0-rc.39/xberg-zig-v1.0.0-rc.39.tar.gz\",\n        .hash = \"xberg-1.0.0-rc.39-iV1GrrNNTxXN1i3ywZUnKZ8aAi60vFLYn8cfE0KnHPK1\",\n    },\n},\n```\n