use node-fetch instead of native v18

package.json

@@ -65,5 +65,8 @@
 	},
 	"engines": {
 		"node": ">=16.17.1"
+	},
+	"volta": {
+		"node": "16.17.1"
 	}
 }

src/index.ts

@@ -5,7 +5,7 @@ or just shoot me
 that too
 */
 
-import { Response as NodeFetchResponse } from "node-fetch"
+import { Response as NodeFetchResponse, RequestInit } from "node-fetch"
 
 export { RequestHandler } from "./RequestHandler"
 export { AmariBot } from "./AmariBot"

tests/amari.test.ts

@@ -1,5 +1,7 @@
+import fetch from "node-fetch"
 import { AmariBot } from "../src"
 import { expect, expectTypeOf, test } from "vitest"
+import { RequestInit } from "node-fetch"
 
 const guildId = "346474194394939393"
 const userId = "439223656200273932"