bump node-sass, sass-loader

UNRELEASED-v8.md

@@ -25,6 +25,7 @@ Use [the changelog guidelines](/documentation/Versioning%20and%20changelog.md) t
 - Removed the `z-index()` scss function ([#4753](https://github.com/Shopify/polaris-react/pull/4753))
 - Removed `nonDesignLangaugeCustomProperties` and `designLangaugeCustomProperties` ([#4770](https://github.com/Shopify/polaris-react/pull/4770))
 - Removed the `rem()` scss function and any references ([#4761](https://github.com/Shopify/polaris-react/pull/4761/))
+- Dropped support for node < 16 ([#4778](https://github.com/Shopify/polaris-react/pull/4778))
 
 ### New components
 

package.json

@@ -123,7 +123,7 @@
     "gray-matter": "^4.0.2",
     "marked": "^0.7.0",
     "node-cmd": "^3.0.0",
-    "node-sass": "^4.12.0",
+    "node-sass": "^6.0.1",
     "npm-run-all": "^4.1.5",
     "object-hash": "^1.3.1",
     "postcss": "^8.3.1",
@@ -135,7 +135,7 @@
     "react-is": "^17.0.2",
     "react-test-renderer": "^17.0.2",
     "rimraf": "^3.0.0",
-    "sass-loader": "^8.0.0",
+    "sass-loader": "^10.1.1",
     "semver": "^6.3.0",
     "shelljs": "^0.8.3",
     "shx": "^0.3.2",