build(deps): bump sklearn2pmml from 0.122.2 to 0.123.1 in /pmml

Bumps [sklearn2pmml](https://github.com/jpmml/sklearn2pmml) from 0.122.2 to 0.123.1.
- [Changelog](https://github.com/jpmml/sklearn2pmml/blob/master/NEWS.md)
- [Commits](jpmml/sklearn2pmml@0.122.2...0.123.1)

---
updated-dependencies:
- dependency-name: sklearn2pmml
  dependency-version: 0.123.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pmml/requirements.txt

@@ -3,5 +3,5 @@ numpy==2.0.2
 pandas==2.3.3
 pypmml==1.5.7
 scikit-learn==1.6.1
-sklearn2pmml==0.122.2
+sklearn2pmml==0.123.1
 seaborn==0.13.2