This just started happening to me with ask deploy for all of my skills with ask version 2.24.1 and node version 14.18.1. I also tested node version 12.x with the same results.
[Error]: CliError: The lambda deploy failed for Alexa region "default": ResourceConflictException: The operation cannot be performed at this time. An update is in progress for resource:XXX
The only way I can deploy is to clear out the existing function name so it deploys to a new function.