fix: update kubeconfig path in installation workflow for consistency

Signed-off-by: Akash <[email protected]>

.github/workflows/installation-chart.yaml

@@ -137,5 +137,4 @@ jobs:
           karmadactl register ${{ steps.token.outputs.endpoint }} \
             --token ${{ steps.token.outputs.token }} \
             --discovery-token-ca-cert-hash ${{ steps.token.outputs.hash }} \
-            --cluster-name ${{ matrix.k8s }} \
-            --kubeconfig ~/.kube/karmada.config
+            --kubeconfig $HOME/.kube/karmada.config