Update package.json

Author: ota-meshi

package.json

@@ -46,6 +46,7 @@
         "json-schema"
     ],
     "author": "Yosuke Ota",
+    "funding": "https://github.com/sponsors/ota-meshi",
     "license": "MIT",
     "bugs": {
         "url": "https://github.com/ota-meshi/eslint-plugin-json-schema-validator/issues"