upgrade lint-staged

package.json

@@ -75,7 +75,7 @@
     "eslint-plugin-react": "^7.11.1",
     "gh-pages": "^2.0.1",
     "husky": "^1.1.2",
-    "lint-staged": "^7.2.0",
+    "lint-staged": "^8.0.4",
     "merge-umi-mock-data": "^0.0.3",
     "mockjs": "^1.0.1-beta3",
     "prettier": "1.14.3",