Use for-of instead of forEach (#3583)

Co-authored-by: syuilo <syuilotan@yahoo.co.jp>
Co-authored-by: Acid Chicken (硫酸鶏) <root@acid-chicken.com>

src/services/following/requests/accept-all.ts

@@ -11,10 +11,10 @@ export default async function(user: IUser) {
 		followeeId: user._id
 	});
 
-	requests.forEach(async request => {
+	for (const request of requests) {
 		const follower = await User.findOne({ _id: request.followerId });
 		accept(user, follower);
-	});
+	}
 
 	User.update({ _id: user._id }, {
 		$set: {