Merge branch '6.3' into 6.4

* 6.3:
  fix tests on AppVeyor
  Hungarian typo fix in validators translation
  [Validator] updated Latvian translation
  [Validator] Added missing Swedish translations
  [Mailer] [Notifier] #52264 Update Sendinblue / Brevo API host
  [Validator] Added missing Estonian translations #51939
  fix File constraint tests on 32bit PHP
  [Form] Skip merging params & files if there are no files in the first place
  [Translation] Ignore bridges in `.gitattributes` file
  Add missing Hungarian validator translations
  Added missing Bosnian translations #51929
  Added missing Serbian (sr_Latn) translations
  Added missing Serbian (sr_Cyrl) translations
  Bump Symfony version to 6.3.7
  Update VERSION for 6.3.6
  Update CHANGELOG for 6.3.6
  Hide generated files in GitHub diffs and statistics
  #51937 - Added missing Danish translations

Author: xabbuh

SendinblueTransport.php

@@ -28,7 +28,7 @@
  */
 final class SendinblueTransport extends AbstractTransport
 {
-    protected const HOST = 'api.sendinblue.com';
+    protected const HOST = 'api.brevo.com';
 
     private string $apiKey;
     private string $sender;