build(deps): bump datasets from 3.3.2 to 3.4.0

Bumps [datasets](https://github.com/huggingface/datasets) from 3.3.2 to 3.4.0.
- [Release notes](https://github.com/huggingface/datasets/releases)
- [Commits](huggingface/datasets@3.3.2...3.4.0)

---
updated-dependencies:
- dependency-name: datasets
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]