🪲 Fix specific asynpg oriented test

* The connections were hanging sometimes
during the tests.

Author: tarsil

tests/test_databases.py

@@ -498,13 +498,15 @@ def insert_independently():
 
         query = notes.insert().values(text="example1", completed=True)
         conn.execute(query)
+        conn.close()
 
     def delete_independently():
         engine = sqlalchemy.create_engine(str(database_url))
         conn = engine.connect()
 
         query = notes.delete()
         conn.execute(query)
+        conn.close()
 
     async with Database(database_url) as database:
         async with database.transaction(force_rollback=True, isolation="serializable"):