aaded temp environment variables to serverless github actions

.github/workflows/deploy_fastapi_backend.yml

@@ -42,4 +42,13 @@ jobs:
           aws-region: eu-west-2
 
       - name: Deploy to AWS Lambda via Serverless
+        env:
+          #          These will be in inserted for real
+          #          API_KEY: ${{ secrets.API_KEY }}
+          #          SECRET_KEY: ${{ secrets.SECRET_KEY }}
+          #          ALGORITHM: ${{ secrets.ALGORITHM }}
+          API_KEY: 'example-api-key'
+          ENVIRONMENT: ${{ github.ref_name }}
+          SECRET_KEY: 'YOUR_SECRET_KEY'
+          ALGORITHM: 'HS256'
         run: cd backend && sls deploy --stage ${{ github.ref_name }}