feat(arm): implement CKV_AZURE_58 for ARM (#5497)

checkov/arm/checks/resource/SynapseWorkspaceEnablesManagedVirtualNetworks.py

@@ -0,0 +1,23 @@
+from __future__ import annotations
+
+
+from checkov.common.models.enums import CheckCategories
+from checkov.arm.base_resource_negative_value_check import BaseResourceNegativeValueCheck
+
+
+class SynapseWorkspaceEnablesManagedVirtualNetworks(BaseResourceNegativeValueCheck):
+    def __init__(self) -> None:
+        name = "Ensure that Azure Synapse workspaces enables managed virtual networks"
+        id = "CKV_AZURE_58"
+        supported_resources = ['Microsoft.Synapse/workspaces']
+        categories = [CheckCategories.NETWORKING]
+        super().__init__(name=name, id=id, categories=categories, supported_resources=supported_resources)
+
+    def get_inspected_key(self) -> str:
+        return 'properties/managedVirtualNetwork'
+
+    def get_forbidden_values(self) -> str:
+        return "default"
+
+
+check = SynapseWorkspaceEnablesManagedVirtualNetworks()