Action uses deprecated `save-state` command

[allanbreyes]

I saw this message in my logs:

The save-state 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's not called anywhere directly and is used in a dependency. Should be fixable by bumping @actions/core to v1.10.0.