Bump gpy from 1.10.0 to 1.13.1

Bumps [gpy](https://github.com/SheffieldML/GPy) from 1.10.0 to 1.13.1.
- [Release notes](https://github.com/SheffieldML/GPy/releases)
- [Changelog](https://github.com/SheffieldML/GPy/blob/devel/CHANGELOG.md)
- [Commits](SheffieldML/GPy@v1.10.0...v1.13.1)

---
updated-dependencies:
- dependency-name: gpy
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements_test.txt

@@ -39,7 +39,7 @@ torchvision==0.16.2+cpu
 timm==0.9.2
 
 catboost==1.2.2
-GPy==1.10.0
+GPy==1.13.1
 lightgbm==4.1.0
 xgboost==2.0.3