chore(deps): update dependency eslint to v7.20.0

Author: renovate-bot

package-lock.json

@@ -49,7 +49,7 @@
     "@types/serverless": "1.78.20",
     "@typescript-eslint/eslint-plugin": "4.15.0",
     "@typescript-eslint/parser": "4.15.0",
-    "eslint": "7.19.0",
+    "eslint": "7.20.0",
     "eslint-config-airbnb-typescript": "12.0.0",
     "eslint-config-prettier": "7.2.0",
     "eslint-plugin-import": "2.22.1",