ci: increase iSCSI E2E timeout from 60m to 70m

Matches NVMe-oF and Shared suites. A single flaky retry can add
5-10 minutes, which pushed the suite past 60m with 1 test remaining.

Author: fenio

.github/workflows/integration.yml

@@ -348,7 +348,7 @@ jobs:
         run: |
           echo "=== Running iSCSI E2E Tests ==="
           # Run only iSCSI-specific tests from the iscsi/ directory
-          ginkgo -v --timeout=60m --flake-attempts=2 ./tests/e2e/iscsi/...
+          ginkgo -v --timeout=70m --flake-attempts=2 ./tests/e2e/iscsi/...
       - name: Upload diagnostic logs
         if: failure()
         uses: actions/upload-artifact@v6