fix(ci): install kustomize directly in infra job

.gitea/workflows/ci.yml

@@ -128,10 +128,13 @@ jobs:
       - name: Validate docker-compose.yml
         run: docker compose config --quiet
 
-      - name: Setup Kustomize
-        uses: imranismail/setup-kustomize@v2
-        with:
-          kustomize-version: "5.4.1"
+      - name: Install Kustomize
+        run: |
+          curl -Lo kustomize.tar.gz https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv5.4.1/kustomize_v5.4.1_linux_amd64.tar.gz
+          tar -xzf kustomize.tar.gz
+          chmod +x kustomize
+          sudo mv kustomize /usr/local/bin/
+          kustomize version
 
       - name: Validate kustomize base
         working-directory: ./infra/k8s