Update deploy-to-gke-BS.yml

fixed errors

.github/workflows/deploy-to-gke-BS.yml

@@ -39,6 +39,11 @@ jobs:
           --zone ${{ secrets.GCP_REGION }} \
           --project ${{ secrets.GCP_PROJECT }}
 
+    - name: Install gke-gcloud-auth-plugin
+      run: |
+        sudo apt-get update
+        sudo apt-get install google-cloud-sdk-gke-gcloud-auth-plugin
+
     - name: Deploy to GKE using Kubernetes Manifests
       run: |
         IMAGE_NAME=${{ secrets.GCP_REGION }}-docker.pkg.dev/${{ secrets.GCP_PROJECT }}/${{ secrets.GCP_REPO }}/beckn-onix:${{ github.sha }}