chore(deps): update dependency node-sass to v7 [security]

Author: renovate[bot]

package.json

@@ -76,7 +76,7 @@
     "html-webpack-plugin": "3.2.0",
     "md5": "2.2.1",
     "mini-css-extract-plugin": "^0.6.0",
-    "node-sass": "^4.11.0",
+    "node-sass": "^7.0.0",
     "purify-css": "1.2.6",
     "purifycss": "1.2.6",
     "purifycss-webpack": "0.7.0",