fix: Ensure that the app works in Python 3.8

app.py

@@ -21,7 +21,7 @@ def main():
 
     def ner(text):
         output: list[dict] = pipe(text)
-        output = [{'entity': dct['entity_group']} | dct for dct in output]
+        output = [{**{'entity': dct['entity_group']}, **dct} for dct in output]
         print(output)
         return {"text": text, "entities": output}