Bump torch from 1.13.1 to 2.6.0 in /lessons/5-NLP

Bumps [torch](https://github.com/pytorch/pytorch) from 1.13.1 to 2.6.0.
- [Release notes](https://github.com/pytorch/pytorch/releases)
- [Changelog](https://github.com/pytorch/pytorch/blob/main/RELEASE.md)
- [Commits](pytorch/pytorch@v1.13.1...v2.6.0)

---
updated-dependencies:
- dependency-name: torch
  dependency-version: 2.6.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

lessons/5-NLP/requirements-pytorch.txt

@@ -7,7 +7,7 @@ opencv-python==4.5.1.48
 Pillow==10.3.0
 scikit-learn
 scipy
-torch==1.13.1
+torch==2.6.0
 torchaudio==0.8.1
 torchinfo==0.0.8
 torchtext==0.9.1