KZ.yaml in countries-3.1.0

- old
+ new

@@ -18,9 +18,10 @@
   subregion: Central Asia
   world_region: EMEA
   un_locode: KZ
   nationality: Kazakhstani
   postal_code: true
+  postal_code_format: "\\d{6}"
   unofficial_names:
   - Kazakhstan
   - Kasachstan
   - Kazajistán
   - カザフスタン