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The compile dependencies have been updated to Knative Serving 0.24.0 and Knative Eventing 0.24.0.
Improvement for configuring environment variables
A new option --env-value-from option has been added to kn service create and kn service update to allow referencing values from secrets and config maps. The order of environment variables are now kept according to the order --env related options are provided on the command line.
You can find the complete list of changes in the CHANGELOG