Build(deps): Bump pydantic-monty from 0.0.17 to 0.0.18 in /python (#6392)

Bumps [pydantic-monty](https://github.com/pydantic/monty) from 0.0.17 to 0.0.18.
- [Release notes](https://github.com/pydantic/monty/releases)
- [Commits](pydantic/monty@v0.0.17...v0.0.18)

---
updated-dependencies:
- dependency-name: pydantic-monty
  dependency-version: 0.0.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]