minor #20990 [Security] Fix type in upgradePassword (Synxgz)

This PR was squashed before being merged into the 6.4 branch.

Discussion
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[Security] Fix type in `upgradePassword`

Fix the wrong type for the method `upgradePassword` according to `PasswordUpgraderInterface`.

It is wrong since the 6.0, the signature has changed from `PasswordAuthenticatedUserInterface|UserInterface` to `PasswordAuthenticatedUserInterface` in `PasswordUpgraderInterface`.

Commit: symfony/symfony@30e2c00#diff-b31195679b81d7a86cf868774ef3bf74a79e8e059250db399531b989b4919bdeL17

Prevents PHP Error :

```
Compile Error: Declaration of App\Services\Security\EmailUserProvider::upgradePassword(Symfony\Component\Security\Core\User\UserInterface $user, string $newHashedPassword): void must be compatible with Symfony\Component\Security\Core\User\PasswordUpgraderInterface::upgradePassword(Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface $user, string $newHashedPassword): void
```

Commits
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6a90896 [Security] Fix type in `upgradePassword`

Author: javiereguiluz

security/passwords.rst

@@ -500,13 +500,14 @@ the user provider::
     namespace App\Security;
 
     // ...
+    use Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface;
     use Symfony\Component\Security\Core\User\PasswordUpgraderInterface;
 
     class UserProvider implements UserProviderInterface, PasswordUpgraderInterface
     {
         // ...
 
-        public function upgradePassword(UserInterface $user, string $newHashedPassword): void
+        public function upgradePassword(PasswordAuthenticatedUserInterface $user, string $newHashedPassword): void
         {
             // set the new hashed password on the User object
             $user->setPassword($newHashedPassword);