Issue #3243405: Add a kernel test of UpdateVersionValidator

tests/src/Kernel/ReadinessValidation/UpdateVersionValidatorTest.php

@@ -36,6 +36,7 @@ class UpdateVersionValidatorTest extends AutomaticUpdatesKernelTestBase {
     $this->assertCheckerResultsFromManager([$result], TRUE);
 
   }
+
   /**
    * Tests that an error is raised if there are minor updates.
    */
@@ -44,4 +45,5 @@ class UpdateVersionValidatorTest extends AutomaticUpdatesKernelTestBase {
     $result = ValidationResult::createError(['Updating from one minor version to another is not supported.']);
     $this->assertCheckerResultsFromManager([$result], TRUE);
   }
+
 }