Bump eslint from 7.30.0 to 7.31.0 (#470)

Author: dependabot[bot]

package-lock.json

@@ -52,7 +52,7 @@
     "strip-json-comments": "^3.1.1"
   },
   "devDependencies": {
-    "eslint": "^7.30.0",
+    "eslint": "^7.31.0",
     "eslint-config-tc": "^15.0.0",
     "eslint-formatter-pretty": "^4.1.0",
     "eslint-plugin-eslint-comments": "^3.2.0",