Bump langchain

Bumps the pip group with 1 update in the /src/ghosts.shadows/src directory: [langchain](https://github.com/langchain-ai/langchain).


Updates `langchain` from 0.2.10 to 0.3.0
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain==0.2.10...langchain==0.3.0)

---
updated-dependencies:
- dependency-name: langchain
  dependency-type: direct:production
  dependency-group: pip
...

Signed-off-by: dependabot[bot] <[email protected]>

src/ghosts.shadows/src/requirements.txt

@@ -1,7 +1,7 @@
 Flask==3.0.2
 gradio==5.0.0
 imaginairy==14.2.0
-langchain==0.2.10
+langchain==0.3.0
 langchain_community==0.2.9
 numpy==1.25.2
 Requests==2.32.2