2.1.0

• Update checkstyle 7.1 -> 7.4
• Update pmd 5.5.1 -> 5.5.2
• Update codenarc 0.25.2 -> 0.26.0
• Update pmd config:
  • Disable junit4 migration rules which cause false positives for non test code:
    JUnit4TestShouldUseBeforeAnnotation,
    JUnit4TestShouldUseAfterAnnotation,
    JUnit4TestShouldUseTestAnnotation