Bump eslint from 7.19.0 to 7.20.0 (#279)

Author: dependabot[bot]

package-lock.json

@@ -34,7 +34,7 @@
   },
   "devDependencies": {
     "@jest/globals": "^26.6.2",
-    "eslint": "^7.19.0",
+    "eslint": "^7.20.0",
     "eslint-formatter-pretty": "^4.0.0",
     "eslint-plugin-eslint-comments": "^3.2.0",
     "eslint-plugin-import": "^2.22.1",