Update dependency ai.koog:koog-agents to v0.5.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ai.koog:koog-agents	0.5.2 -> 0.5.3

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Release Notes

JetBrains/koog (ai.koog:koog-agents)

v0.5.3

Compare Source

Published 12 November 2025

New Features

• Reasoning messages support (#​943)
• Add get models list request to OpenAI-based LLMClients (#​1074)

Improvements

• Support subgraph execution events in an agent pipeline and features, including OpenTelemetry (#​1052)
• Make systemPrompt and temperature optional, set default temperature to null in AIAgent factory functions (#​1078)
• Improve compatibility with kotlinx-coroutines 1.8 in runtime by removing featurePrepareDispatcher from AIAgentPipeline (#​1083)

Bug Fixes

• Fix persistence feature by making ReceivedToolResult serializable (#​1049)
• Make clients properly rethrow cancellations and remove exception wrapping (#​1057)
• Fix StructureFixingParser to do the right number of retires (#​1084)

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