[Yaml] Fixed filename in the ParseException message

| Q             | A
| ------------- | ---
| Bug fix?      | sort of
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | —
| License       | MIT
| Doc PR        | —

Yaml component throws an exception with corrupt filename because of `json_encode`:

```
[Symfony\Component\Yaml\Exception\ParseException]
A YAML file cannot contain tabs as indentation in "\/var\/www\/app\/config.yml" at line 42 (near "	foo: bar").
```