minor symfony#53255 [Validator] Update Charset constraint message (alexandre-daubois)

This PR was merged into the 7.1 branch.

Discussion
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[Validator] Update `Charset` constraint message

| Q             | A
| ------------- | ---
| Branch?       | 7.1
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        | -
| License       | MIT

After symfony#53253 (comment)

Commits
-------

1c170f9 [Validator] Update `Charset` constraint message

Author: fabpot

src/Symfony/Component/Validator/Constraints/Charset.php

@@ -27,7 +27,7 @@ final class Charset extends Constraint
     ];
 
     public array|string $encodings = [];
-    public string $message = 'The detected encoding "{{ detected }}" does not match one of the accepted encoding: "{{ encodings }}".';
+    public string $message = 'The detected character encoding "{{ detected }}" is invalid. Allowed encodings are "{{ encodings }}".';
 
     public function __construct(array|string $encodings = null, string $message = null, array $groups = null, mixed $payload = null, array $options = null)
     {

src/Symfony/Component/Validator/Tests/Constraints/CharsetValidatorTest.php

@@ -40,7 +40,7 @@ public function testInvalidValues(string $value, array $encodings)
     {
         $this->validator->validate($value, new Charset(encodings: $encodings));
 
-        $this->buildViolation('The detected encoding "{{ detected }}" does not match one of the accepted encoding: "{{ encodings }}".')
+        $this->buildViolation('The detected character encoding "{{ detected }}" is invalid. Allowed encodings are "{{ encodings }}".')
             ->setParameter('{{ detected }}', mb_detect_encoding($value, $encodings, true))
             ->setParameter('{{ encodings }}', implode(', ', $encodings))
             ->setCode(Charset::BAD_ENCODING_ERROR)