chore(deps): update dependency postcss-import to v16

Author: renovate[bot]

package.json

@@ -99,7 +99,7 @@
     "html-webpack-plugin": "^5.6.3",
     "mini-css-extract-plugin": "^2.9.2",
     "postcss": "^8.4.49",
-    "postcss-import": "^14.1.0",
+    "postcss-import": "^16.0.0",
     "postcss-loader": "^7.3.4",
     "raw-loader": "^4.0.2",
     "react-refresh": "^0.14.2",