fix(deps): update dependency postcss-styl to ^0.12.0

Author: renovate[bot]

package-lock.json

@@ -93,7 +93,7 @@
     "postcss-safe-parser": "^6.0.0",
     "postcss-scss": "^4.0.3",
     "postcss-selector-parser": "^6.0.9",
-    "postcss-styl": "^0.11.0"
+    "postcss-styl": "^0.12.0"
   },
   "peerDependencies": {
     "eslint": ">=5.0.0",