[Sync EN] Add deprecation/changelog for switch statement semicolons. (#4895)

Commit: `https://github.com/php/doc-en/commit/d149b6ddca64beb9de38cbd4bfd8d19d3bd0b60e`
PR: `https://github.com/php/doc-en/pull/4895`

**Fichiers FR à mettre à jour**
- `language/control-structures/switch.xml`
