Bump actions/upload-artifact from 6 to 7 (#1007)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Mahad Kalam <55807755+skyfallwastaken@users.noreply.github.com>

.github/workflows/ci.yml

@@ -209,7 +209,7 @@ jobs:
           bin/rails test:system
 
       - name: Keep screenshots from failed system tests
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: screenshots