chore: update actions/core (#177)

fix "The set-output command is deprecated" warning
https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

Signed-off-by: Sam Lin <maxisam@gmail.com>

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Signed-off-by: Sam Lin <maxisam@gmail.com>
Co-authored-by: Fuxing Loh <4266087+fuxingloh@users.noreply.github.com>