Update xgboost requirement from ~=3.1.1 to ~=3.1.2 in /dao (#500)

Updates the requirements on [xgboost](https://github.com/dmlc/xgboost) to permit the latest version.
- [Release notes](https://github.com/dmlc/xgboost/releases)
- [Changelog](https://github.com/dmlc/xgboost/blob/master/NEWS.md)
- [Commits](dmlc/xgboost@v3.1.1...v3.1.2)

---
updated-dependencies:
- dependency-name: xgboost
  dependency-version: 3.1.2
  dependency-type: direct:production
...

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dao/requirements.txt

@@ -23,7 +23,7 @@ cryptography~=46.0.3
 tzlocal~=5.3.1
 mip==1.16rc0
 scikit-learn~=1.8.0
-xgboost~=3.1.1
+xgboost~=3.1.2
 scipy~=1.16.3
 joblib~=1.5.3
 knmi-py~=0.2.0