fix: move node-sass to dependencies from devDependencies

node-sass is required in production for Website Theme
yarn --prod will install only dependencies and reduce size

fixes #11219

package.json

@@ -37,6 +37,7 @@
     "jsbarcode": "^3.9.0",
     "moment": "^2.20.1",
     "moment-timezone": "^0.5.28",
+    "node-sass": "^4.13.1",
     "quagga": "^0.12.1",
     "quill": "2.0.0-dev.4",
     "qz-tray": "^2.0.8",
@@ -56,7 +57,6 @@
     "cypress-file-upload": "^3.1.0",
     "graphlib": "^2.1.8",
     "less": "^3.11.1",
-    "node-sass": "^4.13.1",
     "rollup": "^1.2.2",
     "rollup-plugin-buble": "^0.19.2",
     "rollup-plugin-commonjs": "^8.3.0",