Use actions/upload-artifact@v4

[weaponsforge]

Notice

actions/upload-artifact@v3, is undergoing deprecation. As an effect, uploading the site's static artifact builds fails on deployment to the development (Firebase Hosting) website since its missing the .firebaserc file.

Warning

actions/upload-artifact@v3 is scheduled for deprecation on November 30, 2024. Learn more.
Similarly, v1/v2 are scheduled for deprecation on June 30, 2024.
Please update your workflow to use v4 of the artifact actions.
This deprecation will not impact any existing versions of GitHub Enterprise Server being used by customers.

Task

Use actions/upload-artifact@v4 for artifact uploading during deployment

References

Breaking changes from Sept 2, 2024 actions/upload-artifact#602