Bump the production-dependencies group across 1 directory with 3 updates

Bumps the production-dependencies group with 3 updates in the / directory: [deepagents](https://github.com/langchain-ai/deepagents), [langchain-openai](https://github.com/langchain-ai/langchain) and [python-dotenv](https://github.com/theskumar/python-dotenv).


Updates `deepagents` from 0.4.1 to 0.4.5
- [Release notes](https://github.com/langchain-ai/deepagents/releases)
- [Commits](langchain-ai/deepagents@deepagents==0.4.1...deepagents==0.4.5)

Updates `langchain-openai` from 1.1.9 to 1.1.10
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-openai==1.1.9...langchain-openai==1.1.10)

Updates `python-dotenv` from 1.2.1 to 1.2.2
- [Release notes](https://github.com/theskumar/python-dotenv/releases)
- [Changelog](https://github.com/theskumar/python-dotenv/blob/main/CHANGELOG.md)
- [Commits](theskumar/python-dotenv@v1.2.1...v1.2.2)

---
updated-dependencies:
- dependency-name: deepagents
  dependency-version: 0.4.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
- dependency-name: langchain-openai
  dependency-version: 1.1.10
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
- dependency-name: python-dotenv
  dependency-version: 1.2.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
...

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Author: dependabot[bot]