chore(deps): bump langchain-core in /lib/shared/layers/common

Bumps [langchain-core](https://github.com/langchain-ai/langchain) from 0.3.80 to 1.2.11.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-core==0.3.80...langchain-core==1.2.11)

---
updated-dependencies:
- dependency-name: langchain-core
  dependency-version: 1.2.11
  dependency-type: direct:production
...

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

Author: dependabot[bot]

lib/shared/layers/common/requirements.txt

@@ -4,7 +4,7 @@ cfnresponse==1.1.2
 aws_requests_auth==0.4.3
 requests-aws4auth==1.2.3
 langchain==0.3.27
-langchain-core==0.3.80
+langchain-core==1.2.11
 langchain-aws==0.2.10
 langchain-community==0.3.31
 langchain-openai==0.3.35