MK.yaml in countries-3.1.0

- old
+ new

@@ -24,9 +24,10 @@
   subregion: Southern Europe
   world_region: EMEA
   un_locode: MK
   nationality: Macedonian
   postal_code: true
+  postal_code_format: "\\d{4}"
   unofficial_names:
   - Macedonia
   - Mazedonien
   - Macédoine
   - F.Y.R.O.M (Macedonia)