Update dependency postcss-preset-env to v9.6.0 (#9445)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

war/package.json

@@ -39,7 +39,7 @@
     "mini-css-extract-plugin": "2.9.0",
     "postcss": "8.4.39",
     "postcss-loader": "8.1.1",
-    "postcss-preset-env": "9.5.15",
+    "postcss-preset-env": "9.6.0",
     "postcss-scss": "4.0.9",
     "prettier": "3.3.2",
     "sass": "1.77.6",