Bump Microsoft.Extensions.AI.Abstractions and System.Text.Json

[dependabot]

Updated Microsoft.Extensions.AI.Abstractions from 10.4.1 to 10.5.0.

Release notes

Sourced from Microsoft.Extensions.AI.Abstractions's releases.

10.5.0

HTTP Logging Middleware APIs in Microsoft.AspNetCore.Diagnostics.Middleware are now stable. This release also transfers Microsoft.Extensions.VectorData.Abstractions and Microsoft.Extensions.VectorData.ConformanceTests from the Semantic Kernel repository into dotnet/extensions, jumping from 10.1.0 to 10.5.0 for consistent versioning. The release also delivers fixes across the AI libraries, AI Evaluation, and Service Discovery.

Breaking Changes

1. Rename VectorStoreVectorAttribute constructor parameter #​7460
   • The Dimensions parameter was renamed to dimensions (lowercase). This is a source-breaking change only — binary compatibility is preserved.
   • If you use the named argument syntax new VectorStoreVectorAttribute(Dimensions: 1536), update it to new VectorStoreVectorAttribute(dimensions: 1536).

Experimental API Changes

Now Stable

• HTTP Logging Middleware APIs are now stable (previously EXTEXP0013): AddHttpLogEnricher<T>, IHttpLogEnricher, and RequestHeadersLogEnricherOptions.HeadersDataClasses #​7380

What's Changed

AI

• Fix OpenAIResponsesChatClient to respect "store":false in responses #​7417 by @​stephentoub
• Fix InvalidOperationException in CoalesceWebSearchToolCallContent #​7419 by @​stephentoub
• Handle F# optional parameters in AIFunctionFactory schema generation #​7439 by @​eiriktsarpalis
• Fix ComputerCallResponseItem using Item.Id instead of CallId #​7446 by @​jozkee
• Fix HostedFileContent with image MIME type sent as input_file instead of input_image #​7438 by @​stephentoub (co-authored by @​copilot)
• Guard Activity.Current restore with null check in OpenTelemetry streaming clients #​7443 by @​stephentoub (co-authored by @​copilot)
• Enable stateless mode in remote MCP server template (released as v1.2.0 on 2026-04-01) #​7441 by @​jeffhandley

Vector Data

• Move Microsoft.Extensions.VectorData.Abstractions over from Semantic Kernel #​7434 by @​roji
• Rename VectorStoreVectorAttribute dimensions constructor parameter #​7460 by @​roji

AI Evaluation

• Add Path Validation for DiskBasedResponseCache and DiskBasedResultStore #​7397 by @​peterwald
• Update brace-expansion for CVE-2026-33750 #​7457 by @​SamMonoRT

ASP.NET Core Extensions

• Removing experimental attribute from Http logging middleware #​7380 by @​mariamgerges

Service Discovery

• Implement RFC6761 reserved DNS names handling #​6924 by @​rzikm

Documentation Updates

• Remove per-library CHANGELOG.md files #​7413 by @​jeffhandley

Test Improvements

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Updated System.Text.Json from 10.0.4 to 10.0.6.

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Updated System.Text.Json from 10.0.4 to 10.0.7.

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