Update dependency postcss-safe-parser to v4.0.2

Author: renovate[bot]

package-lock.json

@@ -72,7 +72,7 @@
     "postcss-loader": "3.0.0",
     "postcss-normalize": "7.0.1",
     "postcss-preset-env": "6.7.0",
-    "postcss-safe-parser": "4.0.1",
+    "postcss-safe-parser": "4.0.2",
     "react-app-polyfill": "1.0.4",
     "react-dev-utils": "9.1.0",
     "resolve": "1.12.0",