Added secret_key to yml file

.github/workflows/main.yml

@@ -27,6 +27,7 @@ jobs:
     - name: Run migrations
       env:
         DATABASE_URL: ${{ secrets.DATABASE_URL }}  # Certifique-se de adicionar esta variável nos segredos do GitHub
+        SECRET_KEY: ${{ secrets.SECRET_KEY }}
       run: |
         source venv/bin/activate
         python manage.py makemigrations