fix(EUDPA-177): run tests container as root for volume write access

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: SamFarrington

.github/workflows/e2e-tests.yml

@@ -22,6 +22,7 @@ jobs:
         run: |
           docker run --rm \
             --network host \
+            --user root \
             -v ${{ github.workspace }}/artifacts/test-results:/app/test-results \
             -v ${{ github.workspace }}/artifacts/playwright-report:/app/playwright-report \
             -v ${{ github.workspace }}/artifacts/allure-results:/app/allure-results \