Issue #2902728 by mfernea: Fix 'Drupal.Semantics.FunctionT.BackslashSingleQuote' coding standard

core/modules/block/src/Plugin/migrate/source/Block.php

core/modules/ckeditor/ckeditor.module

core/modules/color/color.module

core/modules/field/field.module

core/modules/language/language.module

...te_drupal/tests/src/Unit/source/d6/Drupal6SqlBaseTest.php

...odules/taxonomy/src/Plugin/views/argument_default/Tid.php

core/modules/taxonomy/taxonomy.module

...odules/taxonomy/tests/src/Functional/VocabularyUiTest.php

core/modules/user/src/Tests/UserPasswordResetTest.php

core/modules/user/user.module

core/phpcs.xml.dist