ci: bump actions/upload-artifact from 3 to 4 (#654)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/test.yml

@@ -47,7 +47,7 @@ jobs:
       - run: npm test
 
       - name: Upload test coverage as artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: coverage-${{ matrix.os }}
           path: coverage