Bump cloudpickle from 3.1.1 to 3.1.2

Bumps [cloudpickle](https://github.com/cloudpipe/cloudpickle) from 3.1.1 to 3.1.2.
- [Release notes](https://github.com/cloudpipe/cloudpickle/releases)
- [Changelog](https://github.com/cloudpipe/cloudpickle/blob/master/CHANGES.md)
- [Commits](cloudpipe/cloudpickle@v3.1.1...v3.1.2)

---
updated-dependencies:
- dependency-name: cloudpickle
  dependency-version: 3.1.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]