chore(core): update config scheme version

include/migration/head.js

@@ -1 +1 @@
-module.exports = require('./v3_v4');
+module.exports = require('./v4_v5');

include/migration/v4_v5.js

@@ -0,0 +1,11 @@
+const Migration = require('hexo-component-inferno/lib/core/migrate').Migration;
+
+module.exports = class extends Migration {
+    constructor() {
+        super('5.0.0', null);
+    }
+
+    upgrade(config) {
+        return config;
+    }
+};

include/schema/config.json

@@ -7,7 +7,7 @@
         "version": {
             "type": "string",
             "description": "Version of the configuration file",
-            "default": "4.0.0"
+            "default": "5.0.0"
         },
         "variant": {
             "type": "string",