Update podman demux handler to reflect changes in

containers/podman-py#410

broker/helpers.py

@@ -574,12 +574,13 @@ def from_ssh(cls, stdout, channel):
     def from_duplexed_exec(cls, duplex_exec, runtime=None):
         """Create a Result object from a duplexed exec object from podman or docker."""
         if runtime == "podman":
-            stdout, stderr = demux_output(duplex_exec[1])
+            status, (stdout, stderr) = duplex_exec
             return cls(
-                status=duplex_exec[0],
+                status=status,
                 stdout=stdout.decode("utf-8"),
                 stderr=stderr.decode("utf-8"),
             )
+
         if duplex_exec.output[0]:
             stdout = duplex_exec.output[0].decode("utf-8")
         else: