CWA-2023-003: Inefficient ListChannels query implementation

Severity Medium Affected versions: - wasmd < 0.42.0 Patched versions: - wasmd 0.42.0 (released 2023-09-20; upgrade to 0.43.0 or higher because 0.42.0 was retracted for a different reason) The original implementation of IbcQuery::ListChannels in wasmd looped over all channels of t…