Answering a three-year-old question, so this isn't to help the person who asked so much as it is to help others who might have the same question.
I don't know what "advanced" means to you. Everyone draws the beginner/intermediate/advanced lines in different places. So if you ask for a solo for an audition and specify that it needs to be "advanced," that could mean anything from not first position to something only virtuosos can play well. There's nothing in this question that adequately describes the requirements for this audition. It would have been better to just copy the instructions provided when you registered for the audition into the question, in order to make sure whoever answers knows exactly what you need.
Blindly providing you with music suggestions isn't going to be helpful because I don't know what you are capable of (even if you tell me in text), nor do I know the requirements for this audition.
When you audition, it's important that you try to highlight your strengths, not show off. Play something too challenging for you and instead of impressing the organization for which you are auditioning, you're going to hurt your chances of success.
Also note that for violin, there are differences between how Baroque, Classical, and Romantic pieces are typically interpreted (bowing/articulations, trills, vibrato), and if you don't know what those differences are, then don't try to play a new piece with which you are unfamiliar. The same advice goes for auditions with short notice, and it works when you have plenty of notice, too. It's better to dig out and polish old repertoire that you went through with a teacher than to learn new repertoire. And if you don't already have something in your repertoire that is appropriate for this audition, then that might mean that you simply aren't going to be able to play at the level this ensemble requires.
If you're taking lessons, advice for what to play for an audition should really come from your teacher. And if you're not taking lessons, it might be a good idea to get lessons during your audition prep.