Update dependencies

Author: ai

package.json

@@ -22,7 +22,7 @@
   "license": "MIT",
   "repository": "postcss/postcss-dark-theme-class",
   "engines": {
-    "node": ">=18.0"
+    "node": ">=20.0"
   },
   "funding": [
     {
@@ -38,11 +38,11 @@
     "postcss": "^8.2.14"
   },
   "devDependencies": {
-    "@logux/eslint-config": "^53.0.1",
-    "c8": "^9.1.0",
-    "clean-publish": "^4.4.0",
-    "eslint": "^8.57.0",
-    "postcss": "^8.4.38"
+    "@logux/eslint-config": "^56.1.0",
+    "c8": "^10.1.3",
+    "clean-publish": "^5.2.2",
+    "eslint": "^9.34.0",
+    "postcss": "^8.5.6"
   },
   "prettier": {
     "arrowParens": "avoid",