refactor: remove unnecessary type declare

Author: NamesMT

src/utils/config.ts

@@ -9,7 +9,7 @@ export async function injectEnv(config: string | Record<PropertyKey, any>, notFo
 	// Use simple regex replace for now, will see if object traversal and recursion is needed here (e.g: for non-serializable objects)
 
 	const isObject = typeof config === "object"
-	let _config: string = isObject ? JSON.stringify(config) : config
+	let _config = isObject ? JSON.stringify(config) : config
 
 	_config = _config.replace(/\$\{env:([\w\.]+)\}/g, (_, name) => {
 		// Check if null or undefined