Update dependency eslint to v8

Author: renovate[bot]

package.json

@@ -29,7 +29,7 @@
   "dependencies": {
     "babel-eslint": "10.1.0",
     "cross-fetch": "^3.1.5",
-    "eslint": "^7.10.0",
+    "eslint": "^8.0.0",
     "eslint-config-prettier": "^8.0.0",
     "eslint-plugin-es5": "^1.5.0",
     "eslint-plugin-import": "^2.22.1",