This PR was merged into the 3.4 branch.Discussion----------[Yaml] fix comment in multi line value| Q             | A| ------------- | ---| Branch?       |  4.3 and lower <!-- see below -->| Bug fix?      | yes| New feature?  | no| BC breaks?    | no| Deprecations? | no| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->| Fixed tickets |#32667    <!-- #-prefixed issue number(s), if any -->| License       | MIT| Doc PR        | symfony/symfony-docs#... <!-- required for new features --><!--Replace this notice by a short README for your feature/bugfix. This will help peopleunderstand your PR and can be used as a start for the documentation.Additionally (seehttps://symfony.com/roadmap): - Bug fixes must be submitted against the lowest maintained branch where they apply   (lowest branches are regularly merged to upper ones so they get the fixes too). - Features and deprecations must be submitted against branch 4.4. - Legacy code removals go to the master branch.-->Comments after blank lines are read as value in yaml.````$yaml = <<<YAMLparameters:    abc# CommentYAML;var_dump(Symfony\Component\Yaml\Yaml::parse($yaml));````**Result before fix:**```array(1) {  ["parameters"]=>  string(13) "abc# Comment"}```**Result after fix:**```array(1) {  ["parameters"]=>  string(3) "abc"}```Commits-------dd945e3 fix(yml): fix comment in milti line value