build(deps): bump axios and langchain

Removes [axios](https://github.com/axios/axios). It's no longer used after updating ancestor dependency [langchain](https://github.com/langchain-ai/langchainjs). These dependencies need to be updated together.


Removes `axios`

Updates `langchain` from 0.0.67 to 0.3.19
- [Release notes](https://github.com/langchain-ai/langchainjs/releases)
- [Changelog](https://github.com/langchain-ai/langchainjs/blob/main/release_workspace.js)
- [Commits](langchain-ai/langchainjs@0.0.67...0.3.19)

---
updated-dependencies:
- dependency-name: axios
  dependency-type: indirect
- dependency-name: langchain
  dependency-type: direct:production
...

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

Author: dependabot[bot]