Push to Sandbox when commiting changes for the api specs

.github/workflows/readme.yaml

@@ -3,10 +3,13 @@ on:
   push:
     branches:
       - main
+env:
+  ENVIRONMENT: ${{ github.ref == 'refs/heads/main' && 'Production' || 'Sandbox' }}
+
 jobs:
   rdme-openapi:
     runs-on: ubuntu-latest
-    environment: Production
+    environment: $ENVIRONMENT
     steps:
       - name: Checkout
         uses: actions/checkout@v4