feature: @putout/processor-css: drop support of 🐊 < 40

Author: coderaiser

packages/processor-css/package.json

@@ -37,7 +37,6 @@
     "css"
   ],
   "devDependencies": {
-    "@putout/eslint-flat": "^3.0.0",
     "@putout/test": "^13.0.0",
     "c8": "^10.0.0",
     "eslint": "^9.0.0",
@@ -49,11 +48,11 @@
     "supertape": "^11.0.3"
   },
   "peerDependencies": {
-    "putout": ">=38"
+    "putout": ">=40"
   },
   "license": "MIT",
   "engines": {
-    "node": ">=18"
+    "node": ">=20"
   },
   "publishConfig": {
     "access": "public"