chore(deps): update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/deploy-aks.yaml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up KUBECONFIG
       uses: azure/k8s-set-context@v4