minor symfony#58807 [Mime] Update mime types (smnandre)

This PR was squashed before being merged into the 7.2 branch.

Discussion
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[Mime] Update mime types

| Q             | A
| ------------- | ---
| Branch?       | 7.2
| Bug fix?      |  no
| New feature?  | no
| Deprecations? | no
| Issues        | Fix
| License       | MIT

I had to update the prefered extensions map in `src/Symfony/Component/Mime/Resources/bin/update_mime_types.php`

```diff
-   'yaml' => ['application/yaml'],
-   'yml' => ['application/yaml'],
+   'yml' => ['application/yaml'],
+   'yaml' => ['application/yaml'],
```

This is the only way to make
* 'application/yaml' first type for 'yaml'  extension
* 'application/yaml' first type for 'yml' extension
* 'yaml' **first** extension for 'application/yaml' type
* 'yml' second extension for 'application/yaml' type

---

If it's still possible before 7.2 ?

(last one was 8 months ago)

Commits
-------

1e8a2e0 [Mime] Update mime types

Author: fabpot