deprecation warning from Github Actions

[ofTheo]

The set-output command is deprecated and will be disabled soon. Please upgrade to using Environment Files.

For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

Looks like it is an issue with the action we are using to update the release. And the main repo is now archived, so maybe look at updating to this one: https://github.com/marketplace/actions/update-existing-release