fix: remove STRAPI_API_TOKEN to allow public API access

- Remove STRAPI_API_TOKEN environment variable from backend service
- Backend will now make requests to Strapi without Authorization header
- Allows Strapi Public role permissions to work correctly
- Fixes 401 Unauthorized error when syncing articles

docker-compose.coolify.yml

@@ -80,7 +80,6 @@ services:
       FRONTEND_URL: https://placebo.mk
       PWA_URL: https://app.placebo.mk
       STRAPI_URL: http://cms:1337
-      STRAPI_API_TOKEN: ${STRAPI_API_TOKEN}
       VAPID_SUBJECT: ${VAPID_SUBJECT:-mailto:contact@placebo.mk}
       VAPID_PUBLIC_KEY: ${VAPID_PUBLIC_KEY}
       VAPID_PRIVATE_KEY: ${VAPID_PRIVATE_KEY}