Set check_same_thread false so that one App can be used in parallel (#911)

embedchain/embedchain.py

@@ -88,7 +88,7 @@ class EmbedChain(JSONSerializable):
         self._telemetry_props = {"class": self.__class__.__name__}
         self.telemetry = AnonymousTelemetry(enabled=self.config.collect_metrics)
         # Establish a connection to the SQLite database
-        self.connection = sqlite3.connect(SQLITE_PATH)
+        self.connection = sqlite3.connect(SQLITE_PATH, check_same_thread=False)
         self.cursor = self.connection.cursor()
 
         # Create the 'data_sources' table if it doesn't exist