Update snapshot date to the latest

app.py

@@ -368,8 +368,8 @@ def main():
         gr.Markdown("# abstracts-index")
         gr.Markdown(
             f"Explore {quantity} academic publications selected from the "
-            "[OpenAlex](https://openalex.org) dataset (as of January 1st, 2025) with "
-            "semantic search, not keyword search. This project is an index of the "
+            "[OpenAlex](https://openalex.org) dataset (as of September 30th, 2025) "
+            "with semantic search, not keyword search. This project is an index of the "
             "embeddings generated from their titles and abstracts. The embeddings were "
             f"generated using the [{model_human_name}]({model_link}) model, and the "
             "index was built using the "