Merge branch '6.4' into 7.1

* 6.4:
  [Validator] Improve `zh_TW` translation
  [Security] Improve translation for `zh_TW`
  Bump Symfony version to 6.4.12
  Update VERSION for 6.4.11
  Update CHANGELOG for 6.4.11
  Bump Symfony version to 5.4.44
  Update VERSION for 5.4.43
  Update CONTRIBUTORS for 5.4.43
  Update CHANGELOG for 5.4.43

Author: derrabus