feat: support eslint v8

Author: theoludwig

.eslintrc.json

@@ -1,6 +1,6 @@
 {
   "parserOptions": {
-    "ecmaVersion": 2021,
+    "ecmaVersion": "latest",
     "ecmaFeatures": {
       "jsx": true
     },

package.json

@@ -11,7 +11,7 @@
     "url": "https://github.com/standard/eslint-config-standard/issues"
   },
   "devDependencies": {
-    "eslint": "^7.12.1",
+    "eslint": "^8.0.0",
     "eslint-plugin-import": "^2.22.1",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "^4.2.1",
@@ -47,7 +47,7 @@
   "license": "MIT",
   "main": "index.js",
   "peerDependencies": {
-    "eslint": "^7.12.1",
+    "eslint": "^8.0.0",
     "eslint-plugin-import": "^2.22.1",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "^4.2.1 || ^5.0.0"