Update eslint to version 7.30.0

Author: depfu[bot]

package-lock.json

@@ -55,7 +55,7 @@
     "clean-css": "^5.1.3",
     "cross-env": "^7.0.3",
     "cssnano": "^5.0.6",
-    "eslint": "^7.28.0",
+    "eslint": "^7.30.0",
     "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-prettier": "^3.4.0",
     "jest": "^27.0.6",