Bump langchain-mistralai from 1.1.1 to 1.1.2

Bumps [langchain-mistralai](https://github.com/langchain-ai/langchain) from 1.1.1 to 1.1.2.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-mistralai==1.1.1...langchain-mistralai==1.1.2)

---
updated-dependencies:
- dependency-name: langchain-mistralai
  dependency-version: 1.1.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -10,7 +10,7 @@ langchain-anthropic==1.3.4
 langchain-classic==1.0.2
 langchain-community==0.4.1
 langchain-google-genai==4.2.1
-langchain-mistralai==1.1.1
+langchain-mistralai==1.1.2
 langchain-openai==1.1.11
 langgraph==1.0.8
 libmozdata==0.2.12