Allow wider window for totp verification (#5811)

As server time and client time may not necessarily match

src/server/api/private/signin.ts

@@ -89,7 +89,8 @@ export default async (ctx: Koa.Context) => {
 		const verified = (speakeasy as any).totp.verify({
 			secret: profile.twoFactorSecret,
 			encoding: 'base32',
-			token: token
+			token: token,
+			window: 2
 		});
 
 		if (verified) {