637d259 py3: ipa_otptoken_import: fix hex decoding

Authored and Committed by mbasti 2 years ago
    py3: ipa_otptoken_import: fix hex decoding
    
    codecs.decode() must be used instead of .decode() method
    
    https://pagure.io/freeipa/issue/4985
    
    Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>