setOutput is deprecated

[ckingbailey]

I get a warning about this action in GitHub Workflows UI

Warning: 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/

Call to setOutput method is here

sbom-generator-action/src/index.js

Line 19 in 337f599

core.setOutput("fileName", fileName);

EDIT: I've learned from this issue that this may be due to the version of @actions/core being old (>=1.2.5 here, issue fixed in >=1.10.0)