* chore: bump version to 2.23.9 and update dependencies
- Updated application version from 2.23.8 to 2.23.9 in package.json.
- Added @types/node dependency in email-templates package.json for improved type support.
- Introduced NEXT_PUBLIC_DEFAULT_LOCALE environment variable in web app for localization settings.
- Updated i18n initialization to utilize the new default locale setting.