build(deps): bump pytorch-lightning from 1.5.6 to 2.1.0 (#74)

Bumps [pytorch-lightning](https://github.com/Lightning-AI/lightning) from 1.5.6 to 2.1.0.
- [Release notes](https://github.com/Lightning-AI/lightning/releases)
- [Commits](Lightning-AI/pytorch-lightning@1.5.6...2.1.0)

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

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

requirements.txt

@@ -22,7 +22,7 @@ pycocotools
 # conda install pytorch torchvision -c pytorch
 
 # [TODO] remove later: required by CSN (correct segmentation network)
-pytorch-lightning==1.5.6
+pytorch-lightning==2.1.0
 
 # note we need to use multitracker in cv2 legacy
 Augmentor