Bump mlflow from 1.19.0 to 2.3.1

Bumps [mlflow](https://github.com/mlflow/mlflow) from 1.19.0 to 2.3.1.
- [Release notes](https://github.com/mlflow/mlflow/releases)
- [Changelog](https://github.com/mlflow/mlflow/blob/master/CHANGELOG.md)
- [Commits](mlflow/mlflow@v1.19.0...v2.3.1)

---
updated-dependencies:
- dependency-name: mlflow
  dependency-type: direct:production
...

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