fixup! Add 'caption' to file message

Add CLI file caption support 2

Author: threema-eduard

tests/test_cli.py

@@ -167,8 +167,7 @@ async def test_send_file(self, cli, server):
         output_1 = await cli(
             'send-file', 'ECHOECHO', pytest.msgapi['msgapi']['id'],
             pytest.msgapi['msgapi']['secret'], pytest.msgapi['msgapi']['private'],
-            'See the picture?',
-            server.threema_jpg)
+            server.threema_jpg, 'See the picture?')
         assert output_1
         assert len(server.latest_blob_ids) == 1
         output_2 = await cli(