chore: use const instead of let

Author: Shinigami92

scripts/generateLocales.ts

@@ -31,7 +31,7 @@ const autoGeneratedCommentHeader = `/*
  * Run '${scriptCommand}' to update.
  */`;
 
-for (let locale of locales) {
+for (const locale of locales) {
   const localeDef: LocaleDefinition = require('../src/locales/' +
     locale).default;
   const localeTitle = localeDef.title;