Fixed langchain version

[sauraz]

Change of import path of Embeddings in langchain in the latest version - 0.0.293

- from langchain.embeddings.base import Embeddings
+ from langchain.schema.embeddings import Embeddings

References

• https://github.com/langchain-ai/langchain/releases/tag/v0.0.293

• https://github.com/langchain-ai/langchain/pull/10696/files

Fixed by adding a condition to limit langchain version to 0.0.292