test: fix helm suite conflicting artifact

Two test jobs were collecting artifacts to the same artifact name, which
can cause race conditions and failures to upload artifacts.

Signed-off-by: Blaine Gardner <blaine.gardner@redhat.com>

.github/workflows/integration-test-upgrade-suite.yaml

@@ -96,7 +96,7 @@ jobs:
       uses: actions/upload-artifact@v2
       if: failure()
       with:
-        name: ceph-upgrade-suite-artifact-${{ matrix.kubernetes-versions }}
+        name: ceph-upgrade-helm-suite-artifact-${{ matrix.kubernetes-versions }}
         path: /home/runner/work/rook/rook/tests/integration/_output/tests/
 
     - name: setup tmate session for debugging when event is PR