Bump mlflow from 1.30.1 to 2.9.1

Bumps [mlflow](https://github.com/mlflow/mlflow) from 1.30.1 to 2.9.1.
- [Release notes](https://github.com/mlflow/mlflow/releases)
- [Changelog](https://github.com/mlflow/mlflow/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mlflow/mlflow/commits/v2.9.1)

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

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