Bump Google.GenAI from 1.3.0 to 1.5.0

[dependabot]

Updated Google.GenAI from 1.3.0 to 1.5.0.

Release notes

Sourced from Google.GenAI's releases.

1.5.0

Version 1.5.0, released 2026-03-18

New features

• Support include_server_side_tool_invocations for genai. (c304c12)
• Update to Microsoft.Extensions.AI.Abstractions 10.4.0 (#​247) (b16b93f)

Bug fixes

• use deep copy in Common.cs to avoid large string operation that introduces OutOfMemeory exceptions (501e586)

1.4.0

Version 1.4.0, released 2026-03-12

New features

• Add inference_generation_config to EvaluationConfig for Tuning (9c46031)
• Allow custom endpoints for authentication with Vertex AI in C# (da18a06)
• enable language code for audio transcription config in Live API for Vertex AI (e723b0a)
• Implement RegisterFiles (aa946e4)

Bug fixes

• Compilation for .NET SDK versions 8.0.300 and 8.0.301 (2ec2fd5)

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