Add `SpringJUnit5` checkstyle rule to ensure that JUnit 4 annotations aren't accidentally used in new tests. The "must not be public" rule has been suppressed since there are quite a few tests that extend base tests from other packages.
Add `SpringJUnit5` checkstyle rule to ensure that JUnit 4 annotations aren't accidentally used in new tests. The "must not be public" rule has been suppressed since there are quite a few tests that extend base tests from other packages.