Bump lightning from 2.3.0 to 2.3.1 (#106)

Bumps [lightning](https://github.com/Lightning-AI/lightning) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/Lightning-AI/lightning/releases)
- [Commits](Lightning-AI/pytorch-lightning@2.3.0...2.3.1)

---
updated-dependencies:
- dependency-name: lightning
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>