chore: update eslint

Author: renovate-bot

package.json

@@ -41,11 +41,11 @@
     "babel-preset-env": "1.7.0",
     "cross-env": "5.2.1",
     "deep-equal": "1.1.1",
-    "eslint": "4.19.1",
-    "eslint-config-airbnb-base": "12.1.0",
-    "eslint-config-prettier": "2.10.0",
+    "eslint": "7.15.0",
+    "eslint-config-airbnb-base": "14.2.1",
+    "eslint-config-prettier": "7.0.0",
     "eslint-plugin-import": "2.22.1",
-    "eslint-plugin-prettier": "2.7.0",
+    "eslint-plugin-prettier": "3.2.0",
     "events": "3.2.0",
     "husky": "1.3.1",
     "nyc": "13.3.0",