docs: document the data_as_of response envelope - #1

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-dotnet@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Found version-specific or distribution-specific runtime identifier(s): win7. Affected libraries: System.Private.ServiceModel. In .NET 8.0 and higher, assets for version-specific and distribution-specific runtime identifiers will not be found by default. See https://aka.ms/dotnet/rid-usage for details.

Found version-specific or distribution-specific runtime identifier(s): win7. Affected libraries: System.Private.ServiceModel. In .NET 8.0 and higher, assets for version-specific and distribution-specific runtime identifiers will not be found by default. See https://aka.ms/dotnet/rid-usage for details.

Found version-specific or distribution-specific runtime identifier(s): win7. Affected libraries: System.Private.ServiceModel. In .NET 8.0 and higher, assets for version-specific and distribution-specific runtime identifiers will not be found by default. See https://aka.ms/dotnet/rid-usage for details.