chore(deps): update dependency pydantic-ai to >=1.55.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
pydantic-ai (changelog)	>=1.50.0 → >=1.55.0

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Release Notes

pydantic/pydantic-ai (pydantic-ai)

v1.55.0: (2026-02-05)

Compare Source

What's Changed

🐛 Bug Fixes

• Fix error when using OpenAIResponsesModel with "compatible" provider that returns reasoning_tokens as None instead by @​alibeyram in #​4151
• Fix MultiModalContent union missing discriminator causing incorrect deserialization by @​jerry-reevo in #​4191

Full Changelog: pydantic/pydantic-ai@v1.54.0...v1.55.0

v1.54.0: (2026-02-04)

Compare Source

What's Changed

🚀 Features

• Add concurrency limiting for Agents and Models by @​dmontagu in #​4149

Full Changelog: pydantic/pydantic-ai@v1.53.0...v1.54.0

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[claude]

PR Review: pydantic-ai 1.50.0 → 1.51.0

Summary

✅ LGTM - This is a straightforward dependency update that looks safe to merge.

Analysis

Changes:

• Bumps pydantic-ai from >=1.50.0 to >=1.51.0 in the examples group
• Updates lock file with new versions of pydantic-ai, pydantic-ai-slim, pydantic-evals, and pydantic-graph

What's in 1.51.0:

• UI feature: html_source parameter customization
• Bug fixes for Gemini tool calls and Bedrock caching

Assessment:

• ✅ No breaking changes in this minor version bump
• ✅ Only affects optional examples dependency group (not core functionality)
• ✅ Used in examples/anthropic_comparison/mcp_optimizer_agent.py - usage is straightforward (Agent, models, messages)
• ✅ Bug fixes align with defensive improvements
• ✅ Lock file changes are consistent and expected

Recommendation: Merge after CI passes.