update eslint

Author: afc163

package.json

@@ -63,7 +63,7 @@
     "enzyme": "^3.3.0",
     "enzyme-adapter-react-16": "^1.0.2",
     "enzyme-to-json": "^3.4.0",
-    "eslint": "^6.8.0",
+    "eslint": "^7.0.0",
     "father": "^2.22.0",
     "less": "^3.10.3",
     "np": "^6.0.0",