Update dependency langchain-docling to v2

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
langchain-docling (changelog)	>=0.2.0,<0.3.0 → >=2.0.0,<2.1.0

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Release Notes

docling-project/docling-langchain (langchain-docling)

v2.0.0

Compare Source

Feature

• Upgrade to langchain v1 (#​25) (d0385de)

Breaking

• upgrade to langchain v1 (#​25) (d0385de)

v1.1.0

Compare Source

Feature

• Picture description via langchain llm (#​22) (6dd20b8)

v1.0.0

Compare Source

Feature

• Switch to v1 (#​15) (2c6d00a)
• Enable Python 3.13, update deps, switch to uv, add codecov (#​14) (63b94ac)

Breaking

• switch to v1 (#​15) (2c6d00a)

Documentation

• Update README (#​3) (aa50365)

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: uv.lock

Command failed: uv lock --upgrade-package langchain-docling
Using CPython 3.12.13 interpreter at: /opt/containerbase/tools/python/3.12.13/bin/python3
  × No solution found when resolving dependencies for split (markers:
  │ python_full_version == '3.12.*' and platform_machine != 'x86_64' and
  │ sys_platform == 'darwin'):
  ╰─▶ Because your project depends on langchain-huggingface>=0.3.1,<0.4.0 and
      langchain-huggingface==0.3.1 depends on langchain-core>=0.3.70,<1.0.0,
      we can conclude that agentics-py[vector-store] depends on
      langchain-core>=0.3.70,<1.0.0.
      And because langchain-docling==2.0.0 depends on
      langchain-core>=1.0,<2.dev0, we can conclude that
      langchain-docling==2.0.0 and agentics-py[vector-store] are incompatible.
      And because only langchain-docling<=2.0.0 is available and
      agentics-py:docling depends on langchain-docling>=2.0.0, we can conclude
      that agentics-py:docling and agentics-py[vector-store] are incompatible.
      And because your project requires agentics-py[vector-store] and
      agentics-py:docling, we can conclude that your project's requirements
      are unsatisfiable.

hint: The resolution failed for an environment that is not the current one, consider limiting the environments with `tool.uv.environments`.