Update upload-artifact to v4 (#1241)

Signed-off-by: Eric Sauer <esauer@redhat.com>

Author: etsauer

.github/workflows/cd.yml

@@ -31,7 +31,7 @@ jobs:
               - 'charts/**'
               - 'pelorus-operator/**'
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: operator-code
           path: pelorus-operator/bundle