feat(mb): Add Puerto Rico to the list of dependent territories

Author: kellnerd

musicbrainz/release_countries.ts

@@ -31,6 +31,7 @@ const dependentTerritories = [
 	'FK', // Falkland Islands -> Great Britain
 	'NF', // Norfolk Island -> Australia
 	'NU', // Niue -> New Zealand
+	'PR', // Puerto Rico -> United States
 	'SJ', // Svalbard and Jan Mayen -> Norway
 	'TK', // Tokelau -> New Zealand
 ];