Bump torch from 1.6.0 to 1.13.1 in /examples/research_projects/lxmert (#21174)

Bumps [torch](https://github.com/pytorch/pytorch) from 1.6.0 to 1.13.1.
- [Release notes](https://github.com/pytorch/pytorch/releases)
- [Changelog](https://github.com/pytorch/pytorch/blob/master/RELEASE.md)
- [Commits](https://github.com/pytorch/pytorch/compare/v1.6.0...v1.13.1)

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

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examples/research_projects/lxmert/requirements.txt

@@ -84,7 +84,7 @@ six==1.14.0
 terminado==0.8.3
 testpath==0.4.4
 tokenizers==0.8.1rc2
-torch==1.6.0
+torch==1.13.1
 torchvision==0.7.0
 tornado==6.3.3
 tqdm==4.48.2