openrewrite/rewrite-testing-frameworks

AI Summary: This issue proposes an OpenRewrite recipe to address JUnit test discovery problems in versions 5.13+. The recipe will identify test methods (e.g., `@Test`, `@ParameterizedTest`) that have a non-void return type, change their return type to `void`, and remove any `return` statements from their body, excluding those within nested lambdas or classes. This ensures proper test discovery and execution.