Bump catboost from 0.23.2 to 0.24

Bumps [catboost](https://github.com/catboost/catboost) from 0.23.2 to 0.24.
- [Release notes](https://github.com/catboost/catboost/releases)
- [Changelog](https://github.com/catboost/catboost/blob/master/RELEASE.md)
- [Commits](catboost/catboost@v0.23.2...v0.24)

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

Author: dependabot[bot]

requirements.txt

@@ -22,7 +22,7 @@ mxnet==1.6.0
 --find-links https://download.pytorch.org/whl/torch_stable.html
 torch==1.5.0+cpu
 torchvision==0.6.0+cpu
-catboost==0.23.2
+catboost==0.24
 GPy==1.9.9
 lightgbm==2.3.1
 xgboost==1.1.1