chore(deps): update github artifact actions to v4 (major)

This PR contains the following updates:

Package	Type	Update	Change
actions/download-artifact	action	major	`v3` -> `v4`
actions/upload-artifact	action	major	`v3` -> `v4`

Release Notes

actions/download-artifact (actions/download-artifact)

### [`v4`](https://togithub.com/actions/download-artifact/compare/v3...v4) [Compare Source](https://togithub.com/actions/download-artifact/compare/v3...v4)

actions/upload-artifact (actions/upload-artifact)

### [`v4`](https://togithub.com/actions/upload-artifact/compare/v3...v4) [Compare Source](https://togithub.com/actions/upload-artifact/compare/v3...v4)

Configuration

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vektorprogrammet / vektor-frontend

chore(deps): update github artifact actions to v4 (major) #284

Release Notes

Configuration

Quality Gate passed