docs: Update mkdocstrings-python to 2.x and fix cross-reference paths #3706
Add this suggestion to a batch that can be applied as a single commit. This suggestion is invalid because no changes were made to the code. Suggestions cannot be applied while the pull request is closed. Suggestions cannot be applied while viewing a subset of changes. Only one suggestion per line can be applied in a batch. Add this suggestion to a batch that can be applied as a single commit. Applying suggestions on deleted lines is not supported. You must change the existing code in this line in order to create a valid suggestion. Outdated suggestions cannot be applied. This suggestion has been applied or marked resolved. Suggestions cannot be applied from pending reviews. Suggestions cannot be applied on multi-line comments. Suggestions cannot be applied while the pull request is queued to merge. Suggestion cannot be applied right now. Please check back later.

Updates mkdocstrings-python from 1.x to 2.x to fix deprecation warnings in docs build.
Changes:
mkdocstrings-python>=1.12.2→>=2.0.0import:→inventories:(required by mkdocstrings 1.0+)pydantic_ai.Agent.*→pydantic_ai.agent.Agent.*pydantic_evals.Dataset/Case.*→pydantic_evals.dataset.*pydantic_ai.Tool.*→pydantic_ai.tools.Tool.*pydantic_ai.RunContext.*→pydantic_ai.tools.RunContext.*pydantic_ai.ui.UIAdapter.*Resolves deprecation warnings from https://github.com/pydantic/pydantic-ai/actions/runs/20134237380/job/57783147568