Update Crowdin configuration file

crowdin.yml

@@ -1,4 +1,4 @@
 files:
-  - source: /frontend/src/i18n/translations/en-US.json
+  - source: /frontend/src/i18n/translations/en-US.ts
     translation: /%original_path%/%locale%.ts
 pull_request_title: 'chore(translations): update translations via Crowdin'