Experiment with openrewrite to finish the junit5 migration

### Problem description

https://github.com/openrewrite/rewrite
https://docs.openrewrite.org/running-recipes/popular-recipe-guides/migrate-from-junit-4-to-junit-5

### Preferred solution

_No response_

### Are you interested in contributing a solution yourself?

Yes

### Alternatives you've considered

_No response_

### Anything else?

_No response_