Convert set-output to use GITHUB_OUTPUT file

[JP-Dhabolt]

Due to a change on the Github side on 10/11, the use of set-output is now deprecated and will be disabled "soon". Instead, the action should append to the file designated with the environment variable GITHUB_OUTPUT.

As an example:
echo "::set-output name=new_tag::$tag" would be converted to echo "new_tag=$tag" >> $GITHUB_OUTPUT

[sbe-arg]

@JP-Dhabolt thanks for raising this.

[Sandra-headscape]

#206 (comment)

am currently using 1.52.0, but upon checking realised this wasn't released as a new version as the build failed - https://github.com/anothrNick/github-tag-action/actions/runs/3372412451/jobs/5595804270

can I still use the updated version? thanks (:

[floriancircly]

Hi, i am using 1.52.0 and i still get the following GitHub message: "Warning: The set-output command is deprecated and will be disabled soon. Please upgrade to using Environment Files.".

[JP-Dhabolt]

@sbe-arg, I believe the post-merge build (and hence publish) failed as it is a pull_request Event, and the trigger was my Fork, which would make the GITHUB_TOKEN not have the necessary permissions to push a new tag to the repo.