chore(deps): update dependency pydantic-ai to >=1.56.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
pydantic-ai (changelog)	>=1.55.0 → >=1.56.0

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Release Notes

pydantic/pydantic-ai (pydantic-ai)

v1.56.0: (2026-02-05)

Compare Source

What's Changed

🚀 Features

• Add Claude Opus 4.6, anthropic_effort and anthropic_thinking.type='adaptive' by @​dsfaccini in #​4216
• Add anthropic_betas to AnthropicModelSettings by @​bohdanhr in #​4180

🐛 Bug Fixes

• Fix Bedrock CachePoint placement with multiple trailing documents by @​psg2 in #​4207
• Disallow downloading FileUrls pointing at the local network by default by @​DouweM in #​4227

Full Changelog: pydantic/pydantic-ai@v1.55.0...v1.56.0

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Configuration

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♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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[claude]

PR Review - Dependency Update: pydantic-ai 1.55.0 → 1.56.0

Summary

This is a standard Renovate dependency update for pydantic-ai from >=1.55.0 to >=1.56.0. The dependency is only used in the examples dependency group, so it does not affect the core package.

Changes Reviewed

Direct changes:

• pyproject.toml: Update pydantic-ai requirement from >=1.55.0 to >=1.56.0

Lock file updates:

• anthropic: 0.77.1 → 0.78.0 (transitive dependency)
• pydantic-ai: 1.55.0 → 1.56.0
• pydantic-ai-slim: 1.55.0 → 1.56.0
• pydantic-evals: 1.55.0 → 1.56.0
• pydantic-graph: 1.55.0 → 1.56.0

Key Findings

✅ No breaking changes - Release notes show features and bug fixes only
✅ Limited scope - Only affects examples/ code, not core package
✅ Compatible usage - Checked mcp_optimizer_agent.py - uses standard API (Agent, models, messages)
✅ Security improvement - Anthropic update includes fix for local network FileUrl downloads

New Features (pydantic-ai 1.56.0)

• Claude Opus 4.6 support
• anthropic_effort parameter
• anthropic_thinking.type='adaptive'
• anthropic_betas in AnthropicModelSettings

Recommendation

✅ APPROVE & MERGE

This is a safe dependency update. The changes are additive features that do not affect existing code patterns used in the examples.

Note: Consider running examples locally to verify compatibility if examples are critical to the project.