Bump xgboost from 1.7.2 to 1.7.3

Bumps [xgboost](https://github.com/dmlc/xgboost) from 1.7.2 to 1.7.3.
- [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/v1.7.2...v1.7.3)

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

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

requirements-freqai.txt

@@ -7,5 +7,5 @@ scikit-learn==1.1.3
 joblib==1.2.0
 catboost==1.1.1; platform_machine != 'aarch64'
 lightgbm==3.3.4
-xgboost==1.7.2
+xgboost==1.7.3
 tensorboard==2.11.0