Change June to July (add more time)

app.py

@@ -412,8 +412,8 @@ with gr.Blocks() as demo:
     # Get your Deep Reinforcement Learning Certificate 🎓
     The certification process is completely free:
 
-    - To get a *certificate of completion*: you need to **pass 80% of the assignments before June 1st 2023**.
-    - To get a *certificate of honors*: you need to **pass 100% of the assignments before  June 1st 2023**.
+    - To get a *certificate of completion*: you need to **pass 80% of the assignments before July 30th 2023**.
+    - To get a *certificate of honors*: you need to **pass 100% of the assignments before  July 30th 2023**.
 
     For more information about the certification process [check this](https://huggingface.co/deep-rl-course/communication/certification)