fix: first_name file in en_GH locale (#1566)

src/locales/en_GH/person/first_name.ts

@@ -1 +1,4 @@
-export default ['{{person.female_first_name}}', '{{person.male_first_name}}'];
+import female_first_name from './female_first_name';
+import male_first_name from './male_first_name';
+
+export default [...new Set([...female_first_name, ...male_first_name])];