Update app.py

Certification deadline updated

app.py

@@ -220,8 +220,8 @@ with gr.Blocks() as demo:
     gr.Markdown(f"""
     # 🏆 Check your progress in the Audio Course 🏆
 
-    - To get a certificate of completion, you must **pass 3 out of 4 assignments before July 31st 2023**.
-    - To get an honors certificate, you must **pass 4 out of 4 assignments before July 31st 2023**.
+    - To get a certificate of completion, you must **pass 3 out of 4 assignments before September 1st 2023**.
+    - To get an honors certificate, you must **pass 4 out of 4 assignments before September 1st 2023**.
 
     For the assignments where you have to train a model, your model's metric should be equal to or better than the baseline metric.
     For the Unit 7 assignment, first, check your demo with the [Unit 7 assessment space](https://huggingface.co/spaces/huggingface-course/audio-course-u7-assessment)