[ReleasePR marketplace] [Hub Generated] Review request for Microsoft.Marketplace to add version stable/2021-12-01 (#2215)

Create to sync Azure/azure-rest-api-specs#17051
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/main...AzureSDKAutomation:sdkAuto/marketplace?expand=1)

Author: msftbot[bot]

schemas/2019-08-01/tenantDeploymentTemplate.json

@@ -748,6 +748,21 @@
                 {
                   "$ref": "https://schema.management.azure.com/schemas/2021-06-01/Microsoft.Marketplace.json#/tenant_resourceDefinitions/privateStores_requestApprovals"
                 },
+                {
+                  "$ref": "https://schema.management.azure.com/schemas/2021-12-01/Microsoft.Marketplace.json#/tenant_resourceDefinitions/privateStores"
+                },
+                {
+                  "$ref": "https://schema.management.azure.com/schemas/2021-12-01/Microsoft.Marketplace.json#/tenant_resourceDefinitions/privateStores_adminRequestApprovals"
+                },
+                {
+                  "$ref": "https://schema.management.azure.com/schemas/2021-12-01/Microsoft.Marketplace.json#/tenant_resourceDefinitions/privateStores_collections"
+                },
+                {
+                  "$ref": "https://schema.management.azure.com/schemas/2021-12-01/Microsoft.Marketplace.json#/tenant_resourceDefinitions/privateStores_collections_offers"
+                },
+                {
+                  "$ref": "https://schema.management.azure.com/schemas/2021-12-01/Microsoft.Marketplace.json#/tenant_resourceDefinitions/privateStores_requestApprovals"
+                },
                 {
                   "$ref": "https://schema.management.azure.com/schemas/2019-01-01-preview/Microsoft.Portal.json#/tenant_resourceDefinitions/tenantConfigurations"
                 },