chore(deps): downgrade postcss-nested

package-lock.json

@@ -10393,26 +10393,13 @@
       }
     },
     "postcss-nested": {
-      "version": "5.0.1",
-      "resolved": "https://registry.npmjs.org/postcss-nested/-/postcss-nested-5.0.1.tgz",
-      "integrity": "sha512-ZHNSAoHrMtbEzjq+Qs4R0gHijpXc6F1YUv4TGmGaz7rtfMvVJBbu5hMOH+CrhEaljQpEmx5N/P8i1pXTkbVAmg==",
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/postcss-nested/-/postcss-nested-4.2.3.tgz",
+      "integrity": "sha512-rOv0W1HquRCamWy2kFl3QazJMMe1ku6rCFoAAH+9AcxdbpDeBr6k968MLWuLjvjMcGEip01ak09hKOEgpK9hvw==",
       "dev": true,
       "requires": {
-        "postcss-selector-parser": "^6.0.4"
-      },
-      "dependencies": {
-        "postcss-selector-parser": {
-          "version": "6.0.4",
-          "resolved": "https://registry.npmjs.org/postcss-selector-parser/-/postcss-selector-parser-6.0.4.tgz",
-          "integrity": "sha512-gjMeXBempyInaBqpp8gODmwZ52WaYsVOsfr4L4lDQ7n3ncD6mEyySiDtgzCT+NYC0mmeOLvtsF8iaEf0YT6dBw==",
-          "dev": true,
-          "requires": {
-            "cssesc": "^3.0.0",
-            "indexes-of": "^1.0.1",
-            "uniq": "^1.0.1",
-            "util-deprecate": "^1.0.2"
-          }
-        }
+        "postcss": "^7.0.32",
+        "postcss-selector-parser": "^6.0.2"
       }
     },
     "postcss-normalize-charset": {

package.json

@@ -47,7 +47,7 @@
     "babel-loader": "^8.1.0",
     "babel-preset-react-app": "^9.1.2",
     "cypress": "^5.3.0",
-    "postcss-nested": "^5.0.1",
+    "postcss-nested": "^4.2.3",
     "prettier": "2.1.2",
     "prop-types": "^15.7.2",
     "react": "^16.13.1",