Update carbon-aware-deploy.yml

Author: dsubject

.github/workflows/carbon-aware-deploy.yml

@@ -37,6 +37,6 @@ jobs:
           echo "CLEAN_REGION=$CLEAN_REGION" >> $GITHUB_ENV
 
       - name: Deploy to Fly.io
-        run: flyctl deploy --remote-only --regions $CLEAN_REGION
+        run: flyctl deploy --remote-only --regions $CLEAN_REGION --buildpack static
         env:
           FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}