chore(deps): update dependency pydantic-ai to >=1.44.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
pydantic-ai (changelog)	>=1.42.0 → >=1.44.0

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[claude]

PR Review: pydantic-ai dependency update (1.42.0 → 1.43.0)

Summary

✅ LGTM - This is a safe, automated dependency update from Renovate.

Changes Analysis

• Scope: Updates pydantic-ai from >=1.42.0 to >=1.43.0 in the examples dependency group
• Files: pyproject.toml and uv.lock
• Impact: Limited to example code, not core functionality

Upstream Changes (v1.43.0)

• ✨ Feature: Support for Google embedding models
• 🐛 Bug Fix: Fixed OpenAI tool args handling for dict[str, ...] types

Assessment

Code Quality: ✅ Clean, minimal diff

Bugs/Issues: ✅ None - Bug fix release improves stability

Performance: ✅ No performance concerns

Security: ✅ No security issues. This is a patch/feature release from a trusted source (Pydantic team)

Breaking Changes: ✅ None - Minor version bump following semver

Regression Risk: ⚠️ Low - The OpenAI tool args fix could theoretically change behavior if code was working around the bug, but the current usage in examples/anthropic_comparison/mcp_optimizer_agent.py uses ChosenMcpServerTool (Pydantic model) not dict args, so unaffected.

Recommendation

Approve and merge - Standard dependency maintenance with beneficial bug fixes.