Bump mlflow from 1.23.1 to 2.2.1

Bumps [mlflow](https://github.com/mlflow/mlflow) from 1.23.1 to 2.2.1.
- [Release notes](https://github.com/mlflow/mlflow/releases)
- [Changelog](https://github.com/mlflow/mlflow/blob/master/CHANGELOG.md)
- [Commits](mlflow/mlflow@v1.23.1...v2.2.1)

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

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

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 # benchmark common code
-mlflow==1.23.1
+mlflow==2.2.1
 omegaconf~=2.1
 mpi4py==3.1.1
 matplotlib==3.4.3