refactor: use the gradle runner to set the plugin classpath#14680

jnizet wants to merge 1 commit intospring-projects:masterspring-projects/spring-boot:masterfrom

jnizet:refactor/set-classpath-in-tests-of-gradle-pluginjnizet/spring-boot:refactor/set-classpath-in-tests-of-gradle-pluginCopy head branch name to clipboard