Migrate tests to Java 25

MSAL

Use Java 25 features in tests.

org.openrewrite.java.recipes.UpgradeTestsToJava25

mod run . --recipe=org.openrewrite.java.recipes.UpgradeTestsToJava25

Install it once from Recipe actions, then run it on every repository under the current directory. New to the Moderne CLI? Set it up.