Issue #3243405: Add a kernel test of UpdateVersionValidator

tests/src/Kernel/ReadinessValidation/UpdateVersionValidatorTest.php

@@ -31,7 +31,7 @@ class UpdateVersionValidatorTest extends AutomaticUpdatesKernelTestBase {
    * Tests that an error is raised if there are major updates.
    */
   public function testMajorUpdates(): void {
-    $this->setCoreVersion('8.0.0');
+    $this->setCoreVersion('8.9.1');
     $result = ValidationResult::createError(['Updating from one major version to another is not supported.']);
     $this->assertCheckerResultsFromManager([$result], TRUE);
 
@@ -41,7 +41,7 @@ class UpdateVersionValidatorTest extends AutomaticUpdatesKernelTestBase {
    * Tests that an error is raised if there are minor updates.
    */
   public function testMinorUpdates(): void {
-    $this->setCoreVersion('9.3.0');
+    $this->setCoreVersion('9.7.1');
     $result = ValidationResult::createError(['Updating from one minor version to another is not supported.']);
     $this->assertCheckerResultsFromManager([$result], TRUE);
   }