Fix e2e workflow

The `--short` flag has been removed from kubectl with 1.28.0
(49945dbfab/CHANGELOG/CHANGELOG-1.28.md (deprecation)).

Signed-off-by: Max Jonas Werner <max@coppersoft.com>

.github/workflows/e2e.yaml

@@ -247,7 +247,7 @@ jobs:
       - name: Debug failure
         if: failure()
         run: |
-          kubectl version --client --short
+          kubectl version --client
           kubectl -n flux-system get all
           kubectl -n flux-system describe pods
           kubectl -n flux-system get kustomizations -oyaml