fix(deps): update dependency postcss-loader to v7.3.2

Author: renovate[bot]

package-lock.json

@@ -68,7 +68,7 @@
     "mini-css-extract-plugin": "1.6.2",
     "postcss": "8.4.23",
     "postcss-custom-media": "^9.1.2",
-    "postcss-loader": "7.3.1",
+    "postcss-loader": "7.3.2",
     "postcss-rtlcss": "4.0.6",
     "react-dev-utils": "12.0.1",
     "react-refresh": "0.14.0",