feat: server_auth with Microsoft Workload Identity

.schema/users.schema.json

@@ -80,6 +80,11 @@
           "description": "Generate an AWS RDS IAM auth token per connection attempt.",
           "type": "string",
           "const": "rds_iam"
+        },
+        {
+          "description": "Generate an Azure Workload Identity auth token per connection attempt.",
+          "type": "string",
+          "const": "azure_workload_identity"
         }
       ]
     },