The MinKNOW version number used to generate the pod5 file can be found within the metadata and extracted using the pod5-inspect tool:
Look for the 'distribution_version' field in the output of 'pod5 inspect debug <path to pod5 file>'. Example:
$ pod5 inspect debug pod5_pass/FAU41813_pass_e6a4b621_0.pod5 | grep distribution_version 'distribution_version': '23.04.5'