chore(deps): bump actions/upload-artifact to 7

Author: dependabot[bot]

.github/workflows/playwright.yml

@@ -81,15 +81,15 @@ jobs:
       # ---- Always publish the report + raw results for inspection ----
       - name: Upload Playwright report
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: playwright-report
           path: playwright-report/
           retention-days: 14
 
       - name: Upload test results
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: test-results
           path: test-results/