Issue #3500308 by mdranove, eiriksm: PHPCS errors

tests/src/Functional/LinkCheckerBase.php

tests/src/Functional/LinkCheckerEditFormTest.php

tests/src/Functional/LinkCheckerInterfaceTest.php

tests/src/Kernel/LinkCheckerLinkAccessTest.php

tests/src/Kernel/LinkCheckerMigrationTest.php

tests/src/Kernel/LinkcheckerCleanUpTest.php

tests/src/Kernel/LinkcheckerHtmlLinkExtractorTest.php

tests/src/Kernel/LinkcheckerJsonApiTest.php

tests/src/Kernel/LinkcheckerLinkExtractorServiceTest.php

tests/src/Kernel/LinkcheckerLinkLinkExtractorTest.php

tests/src/Kernel/LinkcheckerRedirectTest.php

tests/src/Kernel/LinkcheckerRepair301Test.php

tests/src/Kernel/LinkcheckerUnpublish404Test.php

tests/src/Kernel/QueueLinksTest.php

tests/src/Unit/LinkCheckerResponseCodesTest.php