pnpm upgrade

Author: Eric-Guo

package.json

@@ -79,14 +79,14 @@
     "axe-core": "^4.11.4",
     "chokidar-cli": "^3.0.0",
     "css-what": "^7.0.0",
-    "cssnano": "^7.1.7",
+    "cssnano": "^7.1.8",
     "eslint": "^9.39.4",
     "eslint-plugin-github": "^6.0.0",
     "glob": "^11.1.0",
     "markdownlint-cli2": "^0.22.1",
     "mocha": "^11.7.5",
     "playwright": "^1.59.1",
-    "postcss": "^8.5.12",
+    "postcss": "^8.5.13",
     "postcss-cli": "^11.0.1",
     "postcss-import": "^16.1.1",
     "postcss-mixins": "^12.1.2",