fix: remove outdated stylelint types (#260)

Author: ricardogobbosouza

README.md

@@ -31,6 +31,8 @@ npm install stylelint-webpack-plugin --save-dev
 npm install stylelint --save-dev
 ```
 
+**Note**: If you are using Stylelint 13 rather than 14+, you might also need to install `@types/stylelint` as a dev dependency if getting stylelint related type errors.
+
 Then add the plugin to your webpack config. For example:
 
 ```js

package-lock.json

@@ -46,9 +46,8 @@
     "webpack": "^5.0.0"
   },
   "dependencies": {
-    "@types/stylelint": "^13.13.3",
-    "globby": "^11.0.4",
     "jest-worker": "^27.3.1",
+    "globby": "^11.0.4",
     "micromatch": "^4.0.4",
     "normalize-path": "^3.0.0",
     "schema-utils": "^4.0.0"