fix(auth): cache only valid results for one day

src/auth.ts

@@ -19,7 +19,7 @@ export class Authentication implements IAuthentication {
 
 		const authResult = await this.authenticator.authenticate(username, password);
 		console.log(`Auth Result for user ${username}`, authResult ? 'SUCCESS' : 'Failure');
-		this.cache.set(cacheKey, authResult, 86400); // cache for one day
+		this.cache.set(cacheKey, authResult, authResult ? 86400 : 60); // cache for one day on success, otherwise just for 60 seconds
 
 		return authResult;
 	}