fix: truncate float timestamps for Slack conversations.history API

time.time() returns a float with decimal places which causes the Slack
conversations.history API to return no messages. Truncating to int fixes
the issue. Fixes #3032

Author: sukhadagholba

app/connectors_service/connectors/sources/slack/datasource.py

@@ -95,8 +95,8 @@ async def get_docs(self, filtering=None):
             yield message, None
 
     async def channels_and_messages(self):
-        current_unix_timestamp = time.time()
-        past_unix_timestamp = current_unix_timestamp - self.n_days_to_fetch * 24 * 3600
+        current_unix_timestamp = int(time.time())
+        past_unix_timestamp = int(current_unix_timestamp - self.n_days_to_fetch * 24 * 3600)
         async for channel in self.slack_client.list_channels(
             not self.auto_join_channels
         ):