Bump xgboost from 1.6.2 to 1.7.1

Bumps [xgboost](https://github.com/dmlc/xgboost) from 1.6.2 to 1.7.1.
- [Release notes](https://github.com/dmlc/xgboost/releases)
- [Changelog](https://github.com/dmlc/xgboost/blob/master/NEWS.md)
- [Commits](https://github.com/dmlc/xgboost/compare/v1.6.2...v1.7.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements-freqai.txt

@@ -6,5 +6,5 @@ scikit-learn==1.1.3
 joblib==1.2.0
 catboost==1.1; platform_machine != 'aarch64'
 lightgbm==3.3.3
-xgboost==1.6.2
+xgboost==1.7.1
 tensorboard==2.10.1