spectacle: clear pipeline warnings

[Burnett2k]

This project currently has node version warnings in the CICD pipeline logs. This is likely due to using an old version of the below actions.
Try and convert to the newest version.
- actions/checkout → actions/checkout@v4
- actions/setup-node → actions/setup-node@v4
- pnpm/action-setup → pnpm/action-setup@v3
- actions/cache → actions/cache@v4
- actions/stale → actions/stale@v4
In order to conform with Nearform_Commerce OSS standards, please convert to use newer versions which no longer have the warning.

    created by Sawyer Automation Bot © using github cli

[Burnett2k]

This also needs to be fixed:

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/

[Burnett2k]

This is now completed.