Bump torch from 1.8.1 to 1.13.1 in /docker

Bumps [torch](https://github.com/pytorch/pytorch) from 1.8.1 to 1.13.1.
- [Release notes](https://github.com/pytorch/pytorch/releases)
- [Changelog](https://github.com/pytorch/pytorch/blob/master/RELEASE.md)
- [Commits](pytorch/pytorch@v1.8.1...v1.13.1)

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

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

Author: dependabot[bot]

docker/requirements.txt

@@ -3,5 +3,5 @@ numpy==1.22.0
 tensorflow==2.9.3
 stable-baselines3
 ray==1.2.0
-torch==1.8.1
+torch==1.13.1
 wandb