Update dependency stylelint-config-standard to v28

Author: renovate[bot]

package.json

@@ -98,7 +98,7 @@
     "semver": "^7.3.2",
     "stylelint": "^14.9.1",
     "stylelint-config-recommended-vue": "^1.0.0",
-    "stylelint-config-standard": "^27.0.0",
+    "stylelint-config-standard": "^28.0.0",
     "stylelint-stylus": "^0.17.0",
     "typescript": "^4.0.0",
     "vue-eslint-editor": "^1.1.0",