Ensure Key Vault exists in deployment workflow

Updated the vmss-deploy GitHub Actions workflow to check for and create the 'dbatoolsci' Azure Key Vault if it does not exist, in addition to ensuring the resource group exists. This helps automate infrastructure setup for deployments.

Author: potatoqualitee

.github/workflows/vmss-deploy.yml

@@ -26,7 +26,7 @@ jobs:
         with:
           creds: ${{ secrets.VMSS_AZURE_CREDENTIALS }}
 
-      - name: Ensure resource group exists
+      - name: Ensure resource group and Key Vault exist
         run: |
           if ! az group show --name dbatools-ci-runners &>/dev/null; then
             echo "Creating resource group dbatools-ci-runners..."
@@ -35,6 +35,13 @@ jobs:
             echo "Resource group dbatools-ci-runners already exists"
           fi
 
+          if ! az keyvault show --name dbatoolsci --resource-group dbatools-ci-runners &>/dev/null; then
+            echo "Creating Key Vault dbatoolsci..."
+            az keyvault create --name dbatoolsci --resource-group dbatools-ci-runners --location eastus
+          else
+            echo "Key Vault dbatoolsci already exists"
+          fi
+
       - name: Extract Azure credentials for Terraform
         id: azure-creds
         run: |